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