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a62270de2c
The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
260 lines
7.6 KiB
LLVM
260 lines
7.6 KiB
LLVM
; RUN: opt -instsimplify -S < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@g1 = global i32 0, align 4
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@g2 = internal global i32 0, align 4
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@g3 = unnamed_addr global i32 0, align 4
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@g4 = hidden global i32 0, align 4
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@g5 = protected global i32 0, align 4
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@g6 = thread_local unnamed_addr global i32 0, align 4
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; Make sure we can simplify away a pointer comparison between
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; dynamically-allocated memory and a local stack allocation.
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; void p()
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; {
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; int *mData;
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; int mStackData[10];
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; mData = new int[12];
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; if (mData != mStackData) {
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; delete[] mData;
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; }
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; }
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define void @_Z2p1v() #0 {
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%mStackData = alloca [10 x i32], align 16
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%1 = bitcast [10 x i32]* %mStackData to i8*
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%2 = tail call noalias i8* @_Znam(i64 48) #4
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%3 = bitcast i8* %2 to i32*
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%4 = getelementptr inbounds [10 x i32], [10 x i32]* %mStackData, i64 0, i64 0
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%5 = icmp eq i32* %3, %4
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br i1 %5, label %7, label %6
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; CHECK-LABEL: @_Z2p1v
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; CHECK-NOT: icmp
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; CHECK: ret void
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; <label>:6 ; preds = %0
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call void @_ZdaPv(i8* %2) #5
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br label %7
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; <label>:7 ; preds = %0, %6
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ret void
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}
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; Also check a more-complicated case with multiple underlying objects.
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define void @_Z2p2bb(i1 zeroext %b1, i1 zeroext %b2) #0 {
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%mStackData = alloca [10 x i32], align 16
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%1 = bitcast [10 x i32]* %mStackData to i8*
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%2 = getelementptr inbounds [10 x i32], [10 x i32]* %mStackData, i64 0, i64 0
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%3 = select i1 %b1, i32* %2, i32* @g2
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%4 = tail call noalias i8* @_Znam(i64 48) #4
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%5 = tail call noalias i8* @_Znam(i64 48) #4
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%.v = select i1 %b2, i8* %4, i8* %5
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%6 = bitcast i8* %.v to i32*
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%7 = icmp eq i32* %6, %3
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br i1 %7, label %9, label %8
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; CHECK-LABEL: @_Z2p2bb
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; CHECK-NOT: icmp
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; CHECK: ret void
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; <label>:8 ; preds = %0
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call void @_ZdaPv(i8* %4) #5
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call void @_ZdaPv(i8* %5) #5
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br label %9
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; <label>:9 ; preds = %0, %8
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ret void
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}
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define void @_Z2p4bb(i1 zeroext %b1, i1 zeroext %b2) #0 {
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%mStackData = alloca [10 x i32], align 16
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%1 = bitcast [10 x i32]* %mStackData to i8*
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%2 = getelementptr inbounds [10 x i32], [10 x i32]* %mStackData, i64 0, i64 0
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%3 = select i1 %b1, i32* %2, i32* @g3
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%4 = tail call noalias i8* @_Znam(i64 48) #4
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%5 = tail call noalias i8* @_Znam(i64 48) #4
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%.v = select i1 %b2, i8* %4, i8* %5
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%6 = bitcast i8* %.v to i32*
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%7 = icmp eq i32* %6, %3
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br i1 %7, label %9, label %8
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; CHECK-LABEL: @_Z2p4bb
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; CHECK-NOT: icmp
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; CHECK: ret void
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; <label>:8 ; preds = %0
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call void @_ZdaPv(i8* %4) #5
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call void @_ZdaPv(i8* %5) #5
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br label %9
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; <label>:9 ; preds = %0, %8
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ret void
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}
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define void @_Z2p5bb(i1 zeroext %b1, i1 zeroext %b2) #0 {
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%mStackData = alloca [10 x i32], align 16
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%1 = bitcast [10 x i32]* %mStackData to i8*
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%2 = getelementptr inbounds [10 x i32], [10 x i32]* %mStackData, i64 0, i64 0
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%3 = select i1 %b1, i32* %2, i32* @g4
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%4 = tail call noalias i8* @_Znam(i64 48) #4
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%5 = tail call noalias i8* @_Znam(i64 48) #4
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%.v = select i1 %b2, i8* %4, i8* %5
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%6 = bitcast i8* %.v to i32*
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%7 = icmp eq i32* %6, %3
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br i1 %7, label %9, label %8
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; CHECK-LABEL: @_Z2p5bb
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; CHECK-NOT: icmp
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; CHECK: ret void
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; <label>:8 ; preds = %0
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call void @_ZdaPv(i8* %4) #5
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call void @_ZdaPv(i8* %5) #5
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br label %9
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; <label>:9 ; preds = %0, %8
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ret void
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}
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define void @_Z2p6bb(i1 zeroext %b1, i1 zeroext %b2) #0 {
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%mStackData = alloca [10 x i32], align 16
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%1 = bitcast [10 x i32]* %mStackData to i8*
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%2 = getelementptr inbounds [10 x i32], [10 x i32]* %mStackData, i64 0, i64 0
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%3 = select i1 %b1, i32* %2, i32* @g5
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%4 = tail call noalias i8* @_Znam(i64 48) #4
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%5 = tail call noalias i8* @_Znam(i64 48) #4
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%.v = select i1 %b2, i8* %4, i8* %5
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%6 = bitcast i8* %.v to i32*
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%7 = icmp eq i32* %6, %3
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br i1 %7, label %9, label %8
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; CHECK-LABEL: @_Z2p6bb
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; CHECK-NOT: icmp
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; CHECK: ret void
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; <label>:8 ; preds = %0
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call void @_ZdaPv(i8* %4) #5
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call void @_ZdaPv(i8* %5) #5
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br label %9
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; <label>:9 ; preds = %0, %8
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ret void
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}
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; Here's another case involving multiple underlying objects, but this time we
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; must keep the comparison (it might involve a regular pointer-typed function
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; argument).
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define void @_Z4nopebbPi(i1 zeroext %b1, i1 zeroext %b2, i32* readnone %q) #0 {
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%mStackData = alloca [10 x i32], align 16
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%1 = bitcast [10 x i32]* %mStackData to i8*
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%2 = getelementptr inbounds [10 x i32], [10 x i32]* %mStackData, i64 0, i64 0
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%3 = select i1 %b1, i32* %2, i32* %q
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%4 = tail call noalias i8* @_Znam(i64 48) #4
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%5 = tail call noalias i8* @_Znam(i64 48) #4
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%.v = select i1 %b2, i8* %4, i8* %5
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%6 = bitcast i8* %.v to i32*
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%7 = icmp eq i32* %6, %3
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br i1 %7, label %9, label %8
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; CHECK-LABEL: @_Z4nopebbPi
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; CHECK: icmp
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; CHECK: ret void
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; <label>:8 ; preds = %0
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call void @_ZdaPv(i8* %4) #5
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call void @_ZdaPv(i8* %5) #5
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br label %9
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; <label>:9 ; preds = %0, %8
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ret void
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}
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define void @_Z2p3bb(i1 zeroext %b1, i1 zeroext %b2) #0 {
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%mStackData = alloca [10 x i32], align 16
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%1 = bitcast [10 x i32]* %mStackData to i8*
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%2 = getelementptr inbounds [10 x i32], [10 x i32]* %mStackData, i64 0, i64 0
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%3 = select i1 %b1, i32* %2, i32* @g1
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%4 = tail call noalias i8* @_Znam(i64 48) #4
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%5 = tail call noalias i8* @_Znam(i64 48) #4
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%.v = select i1 %b2, i8* %4, i8* %5
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%6 = bitcast i8* %.v to i32*
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%7 = icmp eq i32* %6, %3
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br i1 %7, label %9, label %8
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; CHECK-LABEL: @_Z2p3bb
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; CHECK: icmp
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; CHECK: ret void
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; <label>:8 ; preds = %0
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call void @_ZdaPv(i8* %4) #5
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call void @_ZdaPv(i8* %5) #5
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br label %9
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; <label>:9 ; preds = %0, %8
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ret void
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}
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define void @_Z2p7bb(i1 zeroext %b1, i1 zeroext %b2) #0 {
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%mStackData = alloca [10 x i32], align 16
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%1 = bitcast [10 x i32]* %mStackData to i8*
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%2 = getelementptr inbounds [10 x i32], [10 x i32]* %mStackData, i64 0, i64 0
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%3 = select i1 %b1, i32* %2, i32* @g6
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%4 = tail call noalias i8* @_Znam(i64 48) #4
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%5 = tail call noalias i8* @_Znam(i64 48) #4
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%.v = select i1 %b2, i8* %4, i8* %5
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%6 = bitcast i8* %.v to i32*
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%7 = icmp eq i32* %6, %3
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br i1 %7, label %9, label %8
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; CHECK-LABEL: @_Z2p7bb
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; CHECK: icmp
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; CHECK: ret void
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; <label>:8 ; preds = %0
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call void @_ZdaPv(i8* %4) #5
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call void @_ZdaPv(i8* %5) #5
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br label %9
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; <label>:9 ; preds = %0, %8
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ret void
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}
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define void @_Z2p2v(i32 %c) #0 {
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%mStackData = alloca [10 x i32], i32 %c, align 16
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%1 = bitcast [10 x i32]* %mStackData to i8*
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%2 = tail call noalias i8* @_Znam(i64 48) #4
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%3 = bitcast i8* %2 to i32*
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%4 = getelementptr inbounds [10 x i32], [10 x i32]* %mStackData, i64 0, i64 0
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%5 = icmp eq i32* %3, %4
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br i1 %5, label %7, label %6
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; CHECK-LABEL: @_Z2p2v
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; CHECK: icmp
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; CHECK: ret void
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; <label>:6 ; preds = %0
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call void @_ZdaPv(i8* %2) #5
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br label %7
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; <label>:7 ; preds = %0, %6
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ret void
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}
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; Function Attrs: nobuiltin
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declare noalias i8* @_Znam(i64) #2
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; Function Attrs: nobuiltin nounwind
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declare void @_ZdaPv(i8*) #3
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attributes #0 = { uwtable }
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attributes #1 = { nounwind }
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attributes #2 = { nobuiltin }
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attributes #3 = { nobuiltin nounwind }
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attributes #4 = { builtin }
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attributes #5 = { builtin nounwind }
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