97 lines
2.8 KiB
LLVM
97 lines
2.8 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin -asm-verbose=false | FileCheck %s -check-prefix=64BIT
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; rdar://7329206
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; In 32-bit the partial register stall would degrade performance.
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define zeroext i16 @t1(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
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entry:
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; 32BIT-LABEL: t1:
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; 32BIT: movw 20(%esp), %ax
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; 32BIT-NOT: movw %ax, %cx
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; 32BIT: leal 1(%eax), %ecx
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; 64BIT-LABEL: t1:
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; 64BIT-NOT: movw %si, %ax
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; 64BIT: movl %esi, %eax
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%0 = icmp eq i16 %k, %c ; <i1> [#uses=1]
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%1 = add i16 %k, 1 ; <i16> [#uses=3]
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br i1 %0, label %bb, label %bb1
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bb: ; preds = %entry
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tail call void @foo(i16 zeroext %1) nounwind
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ret i16 %1
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bb1: ; preds = %entry
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ret i16 %1
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}
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define zeroext i16 @t2(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
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entry:
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; 32BIT-LABEL: t2:
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; 32BIT: movw 20(%esp), %ax
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; 32BIT-NOT: movw %ax, %cx
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; 32BIT: leal -1(%eax), %ecx
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; 64BIT-LABEL: t2:
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; 64BIT-NOT: movw %si, %ax
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; 64BIT: movl %esi, %eax
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; 64BIT: movzwl %ax
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%0 = icmp eq i16 %k, %c ; <i1> [#uses=1]
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%1 = add i16 %k, -1 ; <i16> [#uses=3]
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br i1 %0, label %bb, label %bb1
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bb: ; preds = %entry
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tail call void @foo(i16 zeroext %1) nounwind
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ret i16 %1
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bb1: ; preds = %entry
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ret i16 %1
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}
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declare void @foo(i16 zeroext)
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define zeroext i16 @t3(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
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entry:
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; 32BIT-LABEL: t3:
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; 32BIT: movw 20(%esp), %ax
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; 32BIT-NOT: movw %ax, %cx
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; 32BIT: leal 2(%eax), %ecx
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; 64BIT-LABEL: t3:
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; 64BIT-NOT: movw %si, %ax
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; 64BIT: movl %esi, %eax
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%0 = add i16 %k, 2 ; <i16> [#uses=3]
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%1 = icmp eq i16 %k, %c ; <i1> [#uses=1]
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br i1 %1, label %bb, label %bb1
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bb: ; preds = %entry
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tail call void @foo(i16 zeroext %0) nounwind
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ret i16 %0
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bb1: ; preds = %entry
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ret i16 %0
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}
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define zeroext i16 @t4(i16 zeroext %c, i16 zeroext %k) nounwind ssp {
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entry:
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; 32BIT-LABEL: t4:
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; 32BIT: movw 16(%esp), %ax
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; 32BIT: movw 20(%esp), %cx
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; 32BIT-NOT: movw %cx, %dx
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; 32BIT: leal (%ecx,%eax), %edx
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; 64BIT-LABEL: t4:
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; 64BIT-NOT: movw %si, %ax
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; 64BIT: movl %esi, %eax
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%0 = add i16 %k, %c ; <i16> [#uses=3]
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%1 = icmp eq i16 %k, %c ; <i1> [#uses=1]
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br i1 %1, label %bb, label %bb1
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bb: ; preds = %entry
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tail call void @foo(i16 zeroext %0) nounwind
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ret i16 %0
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bb1: ; preds = %entry
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ret i16 %0
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}
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