diff options
Diffstat (limited to 'test/CodeGen/X86/narrow-shl-load.ll')
| -rw-r--r-- | test/CodeGen/X86/narrow-shl-load.ll | 43 |
1 files changed, 38 insertions, 5 deletions
diff --git a/test/CodeGen/X86/narrow-shl-load.ll b/test/CodeGen/X86/narrow-shl-load.ll index d67a6a5a2f..53b03884a5 100644 --- a/test/CodeGen/X86/narrow-shl-load.ll +++ b/test/CodeGen/X86/narrow-shl-load.ll @@ -1,12 +1,11 @@ -; RUN: llc -march=x86-64 < %s - -; DAGCombiner should fold this code in finite time. - -; rdar://8606584 +; RUN: llc -march=x86-64 < %s | FileCheck %s target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" target triple = "x86_64-pc-linux-gnu" +; DAGCombiner should fold this code in finite time. +; rdar://8606584 + define void @D() nounwind readnone { bb.nph: br label %while.cond @@ -30,3 +29,37 @@ while.cond: ; preds = %while.cond, %bb.nph while.end: ; preds = %while.cond ret void } + + +; DAGCombiner shouldn't fold the sdiv (ashr) away. +; rdar://8636812 +; CHECK: main: +; CHECK: sarl + +define i32 @main() nounwind { +entry: + %i = alloca i32, align 4 + %j = alloca i8, align 1 + store i32 127, i32* %i, align 4 + store i8 0, i8* %j, align 1 + %tmp3 = load i32* %i, align 4 + %mul = mul nsw i32 %tmp3, 2 + %conv4 = trunc i32 %mul to i8 + %conv5 = sext i8 %conv4 to i32 + %div6 = sdiv i32 %conv5, 2 + %conv7 = trunc i32 %div6 to i8 + %conv9 = sext i8 %conv7 to i32 + %cmp = icmp eq i32 %conv9, -1 + br i1 %cmp, label %if.then, label %if.end + +if.then: ; preds = %entry + ret i32 0 + +if.end: ; preds = %entry + call void @abort() noreturn + unreachable +} + +declare void @abort() noreturn + +declare void @exit(i32) noreturn |