216 lines
7.5 KiB
LLVM
216 lines
7.5 KiB
LLVM
; RUN: opt -S < %s -simplifycfg -simplifycfg-merge-cond-stores=true -simplifycfg-merge-cond-stores-aggressively=false -phi-node-folding-threshold=2 | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "armv7--linux-gnueabihf"
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; This is a bit reversal that has been run through the early optimizer (-mem2reg -gvn -instcombine).
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; There should be no additional PHIs created at all. The store should be on its own in a predicated
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; block and there should be no PHIs.
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; CHECK-LABEL: @f
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; Exactly 15 phis, as there are 15 in the original test case.
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK: select
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; CHECK-NOT: select
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; CHECK: br i1 {{.*}}, label %[[L:.*]], label %[[R:.*]]
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; CHECK: [[L]]: ; preds =
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; CHECK-NEXT: store
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; CHECK-NEXT: br label %[[R]]
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; CHECK: [[R]]: ; preds =
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; CHECK-NEXT: ret i32 0
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define i32 @f(i32* %b) {
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entry:
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%0 = load i32, i32* %b, align 4
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%and = and i32 %0, 1
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%tobool = icmp eq i32 %and, 0
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br i1 %tobool, label %if.end, label %if.then
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if.then: ; preds = %entry
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%or = or i32 %0, -2147483648
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store i32 %or, i32* %b, align 4
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br label %if.end
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if.end: ; preds = %entry, %if.then
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%1 = phi i32 [ %0, %entry ], [ %or, %if.then ]
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%and1 = and i32 %1, 2
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%tobool2 = icmp eq i32 %and1, 0
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br i1 %tobool2, label %if.end5, label %if.then3
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if.then3: ; preds = %if.end
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%or4 = or i32 %1, 1073741824
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store i32 %or4, i32* %b, align 4
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br label %if.end5
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if.end5: ; preds = %if.end, %if.then3
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%2 = phi i32 [ %1, %if.end ], [ %or4, %if.then3 ]
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%and6 = and i32 %2, 4
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%tobool7 = icmp eq i32 %and6, 0
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br i1 %tobool7, label %if.end10, label %if.then8
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if.then8: ; preds = %if.end5
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%or9 = or i32 %2, 536870912
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store i32 %or9, i32* %b, align 4
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br label %if.end10
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if.end10: ; preds = %if.end5, %if.then8
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%3 = phi i32 [ %2, %if.end5 ], [ %or9, %if.then8 ]
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%and11 = and i32 %3, 8
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%tobool12 = icmp eq i32 %and11, 0
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br i1 %tobool12, label %if.end15, label %if.then13
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if.then13: ; preds = %if.end10
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%or14 = or i32 %3, 268435456
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store i32 %or14, i32* %b, align 4
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br label %if.end15
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if.end15: ; preds = %if.end10, %if.then13
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%4 = phi i32 [ %3, %if.end10 ], [ %or14, %if.then13 ]
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%and16 = and i32 %4, 16
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%tobool17 = icmp eq i32 %and16, 0
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br i1 %tobool17, label %if.end20, label %if.then18
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if.then18: ; preds = %if.end15
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%or19 = or i32 %4, 134217728
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store i32 %or19, i32* %b, align 4
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br label %if.end20
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if.end20: ; preds = %if.end15, %if.then18
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%5 = phi i32 [ %4, %if.end15 ], [ %or19, %if.then18 ]
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%and21 = and i32 %5, 32
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%tobool22 = icmp eq i32 %and21, 0
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br i1 %tobool22, label %if.end25, label %if.then23
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if.then23: ; preds = %if.end20
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%or24 = or i32 %5, 67108864
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store i32 %or24, i32* %b, align 4
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br label %if.end25
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if.end25: ; preds = %if.end20, %if.then23
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%6 = phi i32 [ %5, %if.end20 ], [ %or24, %if.then23 ]
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%and26 = and i32 %6, 64
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%tobool27 = icmp eq i32 %and26, 0
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br i1 %tobool27, label %if.end30, label %if.then28
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if.then28: ; preds = %if.end25
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%or29 = or i32 %6, 33554432
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store i32 %or29, i32* %b, align 4
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br label %if.end30
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if.end30: ; preds = %if.end25, %if.then28
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%7 = phi i32 [ %6, %if.end25 ], [ %or29, %if.then28 ]
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%and31 = and i32 %7, 256
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%tobool32 = icmp eq i32 %and31, 0
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br i1 %tobool32, label %if.end35, label %if.then33
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if.then33: ; preds = %if.end30
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%or34 = or i32 %7, 8388608
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store i32 %or34, i32* %b, align 4
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br label %if.end35
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if.end35: ; preds = %if.end30, %if.then33
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%8 = phi i32 [ %7, %if.end30 ], [ %or34, %if.then33 ]
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%and36 = and i32 %8, 512
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%tobool37 = icmp eq i32 %and36, 0
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br i1 %tobool37, label %if.end40, label %if.then38
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if.then38: ; preds = %if.end35
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%or39 = or i32 %8, 4194304
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store i32 %or39, i32* %b, align 4
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br label %if.end40
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if.end40: ; preds = %if.end35, %if.then38
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%9 = phi i32 [ %8, %if.end35 ], [ %or39, %if.then38 ]
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%and41 = and i32 %9, 1024
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%tobool42 = icmp eq i32 %and41, 0
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br i1 %tobool42, label %if.end45, label %if.then43
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if.then43: ; preds = %if.end40
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%or44 = or i32 %9, 2097152
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store i32 %or44, i32* %b, align 4
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br label %if.end45
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if.end45: ; preds = %if.end40, %if.then43
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%10 = phi i32 [ %9, %if.end40 ], [ %or44, %if.then43 ]
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%and46 = and i32 %10, 2048
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%tobool47 = icmp eq i32 %and46, 0
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br i1 %tobool47, label %if.end50, label %if.then48
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if.then48: ; preds = %if.end45
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%or49 = or i32 %10, 1048576
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store i32 %or49, i32* %b, align 4
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br label %if.end50
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if.end50: ; preds = %if.end45, %if.then48
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%11 = phi i32 [ %10, %if.end45 ], [ %or49, %if.then48 ]
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%and51 = and i32 %11, 4096
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%tobool52 = icmp eq i32 %and51, 0
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br i1 %tobool52, label %if.end55, label %if.then53
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if.then53: ; preds = %if.end50
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%or54 = or i32 %11, 524288
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store i32 %or54, i32* %b, align 4
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br label %if.end55
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if.end55: ; preds = %if.end50, %if.then53
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%12 = phi i32 [ %11, %if.end50 ], [ %or54, %if.then53 ]
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%and56 = and i32 %12, 8192
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%tobool57 = icmp eq i32 %and56, 0
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br i1 %tobool57, label %if.end60, label %if.then58
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if.then58: ; preds = %if.end55
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%or59 = or i32 %12, 262144
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store i32 %or59, i32* %b, align 4
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br label %if.end60
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if.end60: ; preds = %if.end55, %if.then58
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%13 = phi i32 [ %12, %if.end55 ], [ %or59, %if.then58 ]
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%and61 = and i32 %13, 16384
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%tobool62 = icmp eq i32 %and61, 0
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br i1 %tobool62, label %if.end65, label %if.then63
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if.then63: ; preds = %if.end60
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%or64 = or i32 %13, 131072
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store i32 %or64, i32* %b, align 4
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br label %if.end65
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if.end65: ; preds = %if.end60, %if.then63
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%14 = phi i32 [ %13, %if.end60 ], [ %or64, %if.then63 ]
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%and66 = and i32 %14, 32768
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%tobool67 = icmp eq i32 %and66, 0
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br i1 %tobool67, label %if.end70, label %if.then68
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if.then68: ; preds = %if.end65
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%or69 = or i32 %14, 65536
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store i32 %or69, i32* %b, align 4
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br label %if.end70
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if.end70: ; preds = %if.end65, %if.then68
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%15 = phi i32 [ %14, %if.end65 ], [ %or69, %if.then68 ]
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%and71 = and i32 %15, 128
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%tobool72 = icmp eq i32 %and71, 0
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br i1 %tobool72, label %if.end75, label %if.then73
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if.then73: ; preds = %if.end70
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%or74 = or i32 %15, 16777216
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store i32 %or74, i32* %b, align 4
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br label %if.end75
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if.end75: ; preds = %if.end70, %if.then73
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ret i32 0
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}
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