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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-06-22 16:36:43 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-06-22 16:36:43 +0000 |
| commit | 7ee3ca10f53aacce1f3aa052f81f9598ac09db33 (patch) | |
| tree | 62c1b3fd0e6cd3e2ad6116da04689e5725468927 /test | |
| parent | 63e0e8d90b6a2f41601097c47e37836fba7506d8 (diff) | |
| download | external_llvm-7ee3ca10f53aacce1f3aa052f81f9598ac09db33.zip external_llvm-7ee3ca10f53aacce1f3aa052f81f9598ac09db33.tar.gz external_llvm-7ee3ca10f53aacce1f3aa052f81f9598ac09db33.tar.bz2 | |
Revert remaining part of r93200: "Disable folding sext(trunc(x)) -> x"
This fixes PR5997.
These transforms were disabled because codegen couldn't deal with other
uses of trunc(x). This is now handled by the peephole pass.
This causes no regressions on x86-64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159003 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstCombine/trunc.ll | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/test/Transforms/InstCombine/trunc.ll b/test/Transforms/InstCombine/trunc.ll index 6ec342a..cbbad7f 100644 --- a/test/Transforms/InstCombine/trunc.ll +++ b/test/Transforms/InstCombine/trunc.ll @@ -12,8 +12,8 @@ define i64 @test1(i64 %a) { call void @use(i32 %b) ret i64 %d ; CHECK: @test1 -; CHECK: %d = and i64 %a, 15 -; CHECK: ret i64 %d +; CHECK-NOT: ext +; CHECK: ret } define i64 @test2(i64 %a) { %b = trunc i64 %a to i32 @@ -34,8 +34,8 @@ define i64 @test3(i64 %a) { call void @use(i32 %b) ret i64 %d ; CHECK: @test3 -; CHECK: %d = and i64 %a, 8 -; CHECK: ret i64 %d +; CHECK-NOT: ext +; CHECK: ret } define i64 @test4(i64 %a) { %b = trunc i64 %a to i32 @@ -46,8 +46,9 @@ define i64 @test4(i64 %a) { ret i64 %d ; CHECK: @test4 ; CHECK: = and i64 %a, 8 -; CHECK: %d = xor i64 {{.*}}, 8 -; CHECK: ret i64 %d +; CHECK: = xor i64 {{.*}}, 8 +; CHECK-NOT: ext +; CHECK: ret } define i32 @test5(i32 %A) { |