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author | Stephen Hines <srhines@google.com> | 2014-07-21 00:45:20 -0700 |
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committer | Stephen Hines <srhines@google.com> | 2014-07-25 00:48:57 -0700 |
commit | cd81d94322a39503e4a3e87b6ee03d4fcb3465fb (patch) | |
tree | 81b7dd2bb4370a392f31d332a566c903b5744764 /test/Transforms/LICM/hoist-bitcast-load.ll | |
parent | 0c5f13c0c4499eaf42ab5e9e2ceabd4e20e36861 (diff) | |
download | external_llvm-cd81d94322a39503e4a3e87b6ee03d4fcb3465fb.zip external_llvm-cd81d94322a39503e4a3e87b6ee03d4fcb3465fb.tar.gz external_llvm-cd81d94322a39503e4a3e87b6ee03d4fcb3465fb.tar.bz2 |
Update LLVM for rebase to r212749.
Includes a cherry-pick of:
r212948 - fixes a small issue with atomic calls
Change-Id: Ib97bd980b59f18142a69506400911a6009d9df18
Diffstat (limited to 'test/Transforms/LICM/hoist-bitcast-load.ll')
-rw-r--r-- | test/Transforms/LICM/hoist-bitcast-load.ll | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/test/Transforms/LICM/hoist-bitcast-load.ll b/test/Transforms/LICM/hoist-bitcast-load.ll new file mode 100644 index 0000000..639dca5 --- /dev/null +++ b/test/Transforms/LICM/hoist-bitcast-load.ll @@ -0,0 +1,201 @@ +; RUN: opt -S -basicaa -licm < %s | FileCheck %s +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +; Make sure the basic alloca pointer hoisting works: +; CHECK-LABEL: @test1 +; CHECK: load i32* %c, align 4 +; CHECK: for.body: + +; Function Attrs: nounwind uwtable +define void @test1(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 { +entry: + %cmp6 = icmp sgt i32 %n, 0 + %c = alloca i32 + br i1 %cmp6, label %for.body, label %for.end + +for.body: ; preds = %entry, %for.inc + %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] + %arrayidx = getelementptr inbounds i32* %a, i64 %indvars.iv + %0 = load i32* %arrayidx, align 4 + %cmp1 = icmp sgt i32 %0, 0 + br i1 %cmp1, label %if.then, label %for.inc + +if.then: ; preds = %for.body + %1 = load i32* %c, align 4 + %arrayidx3 = getelementptr inbounds i32* %b, i64 %indvars.iv + %2 = load i32* %arrayidx3, align 4 + %mul = mul nsw i32 %2, %1 + store i32 %mul, i32* %arrayidx, align 4 + br label %for.inc + +for.inc: ; preds = %for.body, %if.then + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %n + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.inc, %entry + ret void +} + +; Make sure the basic alloca pointer hoisting works through a bitcast to a +; pointer to a smaller type: +; CHECK-LABEL: @test2 +; CHECK: load i32* %c, align 4 +; CHECK: for.body: + +; Function Attrs: nounwind uwtable +define void @test2(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 { +entry: + %cmp6 = icmp sgt i32 %n, 0 + %ca = alloca i64 + %c = bitcast i64* %ca to i32* + br i1 %cmp6, label %for.body, label %for.end + +for.body: ; preds = %entry, %for.inc + %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] + %arrayidx = getelementptr inbounds i32* %a, i64 %indvars.iv + %0 = load i32* %arrayidx, align 4 + %cmp1 = icmp sgt i32 %0, 0 + br i1 %cmp1, label %if.then, label %for.inc + +if.then: ; preds = %for.body + %1 = load i32* %c, align 4 + %arrayidx3 = getelementptr inbounds i32* %b, i64 %indvars.iv + %2 = load i32* %arrayidx3, align 4 + %mul = mul nsw i32 %2, %1 + store i32 %mul, i32* %arrayidx, align 4 + br label %for.inc + +for.inc: ; preds = %for.body, %if.then + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %n + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.inc, %entry + ret void +} + +; Make sure the basic alloca pointer hoisting works through a bitcast to a +; pointer to a smaller type (where the bitcast also needs to be hoisted): +; CHECK-LABEL: @test3 +; CHECK: load i32* %c, align 4 +; CHECK: for.body: + +; Function Attrs: nounwind uwtable +define void @test3(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 { +entry: + %cmp6 = icmp sgt i32 %n, 0 + %ca = alloca i64 + br i1 %cmp6, label %for.body, label %for.end + +for.body: ; preds = %entry, %for.inc + %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] + %arrayidx = getelementptr inbounds i32* %a, i64 %indvars.iv + %0 = load i32* %arrayidx, align 4 + %cmp1 = icmp sgt i32 %0, 0 + br i1 %cmp1, label %if.then, label %for.inc + +if.then: ; preds = %for.body + %c = bitcast i64* %ca to i32* + %1 = load i32* %c, align 4 + %arrayidx3 = getelementptr inbounds i32* %b, i64 %indvars.iv + %2 = load i32* %arrayidx3, align 4 + %mul = mul nsw i32 %2, %1 + store i32 %mul, i32* %arrayidx, align 4 + br label %for.inc + +for.inc: ; preds = %for.body, %if.then + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %n + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.inc, %entry + ret void +} + +; Make sure the basic alloca pointer hoisting does not happen through a bitcast +; to a pointer to a larger type: +; CHECK-LABEL: @test4 +; CHECK: for.body: +; CHECK: load i32* %c, align 4 + +; Function Attrs: nounwind uwtable +define void @test4(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 { +entry: + %cmp6 = icmp sgt i32 %n, 0 + %ca = alloca i16 + %c = bitcast i16* %ca to i32* + br i1 %cmp6, label %for.body, label %for.end + +for.body: ; preds = %entry, %for.inc + %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] + %arrayidx = getelementptr inbounds i32* %a, i64 %indvars.iv + %0 = load i32* %arrayidx, align 4 + %cmp1 = icmp sgt i32 %0, 0 + br i1 %cmp1, label %if.then, label %for.inc + +if.then: ; preds = %for.body + %1 = load i32* %c, align 4 + %arrayidx3 = getelementptr inbounds i32* %b, i64 %indvars.iv + %2 = load i32* %arrayidx3, align 4 + %mul = mul nsw i32 %2, %1 + store i32 %mul, i32* %arrayidx, align 4 + br label %for.inc + +for.inc: ; preds = %for.body, %if.then + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %n + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.inc, %entry + ret void +} + +; Don't crash on bitcasts to unsized types. +; CHECK-LABEL: @test5 +; CHECK: for.body: +; CHECK: load i32* %c, align 4 + +%atype = type opaque + +; Function Attrs: nounwind uwtable +define void @test5(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 { +entry: + %cmp6 = icmp sgt i32 %n, 0 + %ca = alloca i16 + %cab = bitcast i16* %ca to %atype* + %c = bitcast %atype* %cab to i32* + br i1 %cmp6, label %for.body, label %for.end + +for.body: ; preds = %entry, %for.inc + %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ] + %arrayidx = getelementptr inbounds i32* %a, i64 %indvars.iv + %0 = load i32* %arrayidx, align 4 + %cmp1 = icmp sgt i32 %0, 0 + br i1 %cmp1, label %if.then, label %for.inc + +if.then: ; preds = %for.body + %1 = load i32* %c, align 4 + %arrayidx3 = getelementptr inbounds i32* %b, i64 %indvars.iv + %2 = load i32* %arrayidx3, align 4 + %mul = mul nsw i32 %2, %1 + store i32 %mul, i32* %arrayidx, align 4 + br label %for.inc + +for.inc: ; preds = %for.body, %if.then + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %n + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.inc, %entry + ret void +} + +attributes #0 = { nounwind uwtable } + |