305 lines
8.5 KiB
LLVM
305 lines
8.5 KiB
LLVM
; RUN: llc < %s -mtriple=i686-pc-linux | FileCheck %s -check-prefix=LINUX -check-prefix=CHECK
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; RUN: llc < %s -mtriple=i686-apple-darwin | FileCheck %s -check-prefix=DARWIN -check-prefix=CHECK
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declare i32 @__gxx_personality_v0(...)
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declare void @good(i32 %a, i32 %b, i32 %c, i32 %d)
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declare void @large(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f)
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declare void @empty()
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; When we use an invoke, we expect a .cfi_escape GNU_ARGS_SIZE
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; with size 16 before the invocation. Without FP, we also expect
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; .cfi_adjust_cfa_offset after each push.
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; Darwin should not generate pushes in either circumstance.
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; CHECK-LABEL: test1_nofp:
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; LINUX: .cfi_escape 0x2e, 0x10
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; LINUX-NEXT: pushl $4
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: pushl $3
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: pushl $2
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: pushl $1
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: call
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; LINUX-NEXT: addl $16, %esp
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; LINUX: .cfi_adjust_cfa_offset -16
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; DARWIN-NOT: .cfi_escape
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; DARWIN-NOT: pushl
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define void @test1_nofp() #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @good(i32 1, i32 2, i32 3, i32 4)
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to label %continue unwind label %cleanup
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continue:
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ret void
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cleanup:
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landingpad { i8*, i32 }
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cleanup
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ret void
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}
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; CHECK-LABEL: test1_fp:
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; LINUX: .cfi_escape 0x2e, 0x10
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; LINUX-NEXT: pushl $4
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; LINUX-NEXT: pushl $3
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; LINUX-NEXT: pushl $2
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; LINUX-NEXT: pushl $1
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; LINUX-NEXT: call
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; LINUX-NEXT: addl $16, %esp
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; DARWIN: pushl %ebp
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; DARWIN-NOT: .cfi_escape
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; DARWIN-NOT: pushl
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define void @test1_fp() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @good(i32 1, i32 2, i32 3, i32 4)
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to label %continue unwind label %cleanup
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continue:
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ret void
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cleanup:
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landingpad { i8*, i32 }
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cleanup
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ret void
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}
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; If the function has no handlers, we don't need to generate GNU_ARGS_SIZE,
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; even if it has an unwind table. Without FP, we still need cfi_adjust_cfa_offset,
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; so darwin should not generate pushes.
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; CHECK-LABEL: test2_nofp:
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; LINUX-NOT: .cfi_escape
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; LINUX: pushl $4
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: pushl $3
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: pushl $2
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: pushl $1
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: call
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; LINUX-NEXT: addl $28, %esp
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; LINUX: .cfi_adjust_cfa_offset -16
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; DARWIN-NOT: .cfi_escape
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; DARWIN-NOT: pushl
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define void @test2_nofp() #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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call void @good(i32 1, i32 2, i32 3, i32 4)
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ret void
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}
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; CHECK-LABEL: test2_fp:
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; CHECK-NOT: .cfi_escape
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; CHECK-NOT: .cfi_adjust_cfa_offset
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; CHECK: pushl $4
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; CHECK-NEXT: pushl $3
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; CHECK-NEXT: pushl $2
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; CHECK-NEXT: pushl $1
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; CHECK-NEXT: call
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; CHECK-NEXT: addl $24, %esp
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define void @test2_fp() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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call void @good(i32 1, i32 2, i32 3, i32 4)
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ret void
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}
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; If we did not end up using any pushes, no need for GNU_ARGS_SIZE or
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; cfi_adjust_cfa_offset.
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; CHECK-LABEL: test3_nofp:
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; LINUX-NOT: .cfi_escape
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; LINUX-NOT: .cfi_adjust_cfa_offset
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; LINUX-NOT: pushl
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; LINUX: retl
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define void @test3_nofp() #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @empty()
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to label %continue unwind label %cleanup
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continue:
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ret void
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cleanup:
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landingpad { i8*, i32 }
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cleanup
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ret void
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}
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; If we did not end up using any pushes, no need for GNU_ARGS_SIZE or
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; cfi_adjust_cfa_offset.
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; CHECK-LABEL: test3_fp:
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; LINUX: pushl %ebp
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; LINUX-NOT: .cfi_escape
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; LINUX-NOT: .cfi_adjust_cfa_offset
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; LINUX-NOT: pushl
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; LINUX: retl
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define void @test3_fp() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @empty()
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to label %continue unwind label %cleanup
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continue:
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ret void
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cleanup:
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landingpad { i8*, i32 }
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cleanup
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ret void
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}
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; Different sized stacks need different GNU_ARGS_SIZEs
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; CHECK-LABEL: test4:
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; LINUX: .cfi_escape 0x2e, 0x10
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; LINUX-NEXT: pushl $4
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; LINUX-NEXT: pushl $3
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; LINUX-NEXT: pushl $2
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; LINUX-NEXT: pushl $1
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; LINUX-NEXT: call
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; LINUX-NEXT: addl $16, %esp
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; LINUX: .cfi_escape 0x2e, 0x20
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; LINUX: subl $8, %esp
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; LINUX-NEXT: pushl $11
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; LINUX-NEXT: pushl $10
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; LINUX-NEXT: pushl $9
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; LINUX-NEXT: pushl $8
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; LINUX-NEXT: pushl $7
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; LINUX-NEXT: pushl $6
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; LINUX-NEXT: calll large
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; LINUX-NEXT: addl $32, %esp
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define void @test4() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @good(i32 1, i32 2, i32 3, i32 4)
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to label %continue1 unwind label %cleanup
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continue1:
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invoke void @large(i32 6, i32 7, i32 8, i32 9, i32 10, i32 11)
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to label %continue2 unwind label %cleanup
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continue2:
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ret void
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cleanup:
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landingpad { i8*, i32 }
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cleanup
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ret void
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}
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; If we did use pushes, we need to reset GNU_ARGS_SIZE before a call
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; without parameters, but don't need to adjust the cfa offset
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; CHECK-LABEL: test5_nofp:
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; LINUX: .cfi_escape 0x2e, 0x10
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; LINUX-NEXT: pushl $4
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: pushl $3
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: pushl $2
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: pushl $1
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; LINUX-NEXT: Ltmp{{[0-9]+}}:
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; LINUX-NEXT: .cfi_adjust_cfa_offset 4
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; LINUX-NEXT: call
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; LINUX-NEXT: addl $16, %esp
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; LINUX: .cfi_adjust_cfa_offset -16
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; LINUX-NOT: .cfi_adjust_cfa_offset
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; LINUX: .cfi_escape 0x2e, 0x00
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; LINUX-NOT: .cfi_adjust_cfa_offset
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; LINUX: call
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define void @test5_nofp() #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @good(i32 1, i32 2, i32 3, i32 4)
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to label %continue1 unwind label %cleanup
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continue1:
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invoke void @empty()
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to label %continue2 unwind label %cleanup
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continue2:
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ret void
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cleanup:
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landingpad { i8*, i32 }
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cleanup
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ret void
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}
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; CHECK-LABEL: test5_fp:
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; LINUX: .cfi_escape 0x2e, 0x10
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; LINUX-NEXT: pushl $4
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; LINUX-NEXT: pushl $3
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; LINUX-NEXT: pushl $2
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; LINUX-NEXT: pushl $1
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; LINUX-NEXT: call
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; LINUX-NEXT: addl $16, %esp
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; LINUX: .cfi_escape 0x2e, 0x00
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; LINUX-NOT: .cfi_adjust_cfa_offset
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; LINUX: call
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define void @test5_fp() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @good(i32 1, i32 2, i32 3, i32 4)
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to label %continue1 unwind label %cleanup
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continue1:
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invoke void @empty()
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to label %continue2 unwind label %cleanup
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continue2:
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ret void
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cleanup:
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landingpad { i8*, i32 }
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cleanup
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ret void
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}
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; FIXME: This is actually inefficient - we don't need to repeat the .cfi_escape twice.
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; CHECK-LABEL: test6:
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; LINUX: .cfi_escape 0x2e, 0x10
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; LINUX: call
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; LINUX: .cfi_escape 0x2e, 0x10
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; LINUX: call
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define void @test6() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @good(i32 1, i32 2, i32 3, i32 4)
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to label %continue1 unwind label %cleanup
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continue1:
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invoke void @good(i32 5, i32 6, i32 7, i32 8)
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to label %continue2 unwind label %cleanup
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continue2:
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ret void
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cleanup:
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landingpad { i8*, i32 }
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cleanup
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ret void
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}
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; Darwin should generate pushes in the presense of FP and an unwind table,
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; but not FP and invoke.
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; CHECK-LABEL: test7:
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; DARWIN: pushl %ebp
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; DARWIN: movl %esp, %ebp
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; DARWIN: .cfi_def_cfa_register %ebp
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; DARWIN-NOT: .cfi_adjust_cfa_offset
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; DARWIN: pushl $4
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; DARWIN-NEXT: pushl $3
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; DARWIN-NEXT: pushl $2
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; DARWIN-NEXT: pushl $1
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; DARWIN-NEXT: call
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define void @test7() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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call void @good(i32 1, i32 2, i32 3, i32 4)
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ret void
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}
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; CHECK-LABEL: test8:
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; DARWIN: pushl %ebp
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; DARWIN: movl %esp, %ebp
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; DARWIN-NOT: .cfi_adjust_cfa_offset
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; DARWIN-NOT: pushl
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define void @test8() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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invoke void @good(i32 1, i32 2, i32 3, i32 4)
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to label %continue unwind label %cleanup
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continue:
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ret void
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cleanup:
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landingpad { i8*, i32 }
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cleanup
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ret void
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}
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attributes #0 = { optsize }
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attributes #1 = { optsize "no-frame-pointer-elim"="true" }
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