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| author | Chris Lattner <sabre@nondot.org> | 2009-11-07 19:11:46 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-11-07 19:11:46 +0000 |
| commit | 918871ee016e9336e28b434738d20960036d05a4 (patch) | |
| tree | 27b07d5c7caf4bd3e276e85397e0b33dad414040 /test/Transforms/InstCombine/udivrem-change-width.ll | |
| parent | 59a9178fbedb88427c8ff9e5fa7a8f2038f80a2e (diff) | |
| download | llvm-918871ee016e9336e28b434738d20960036d05a4.tar.gz llvm-918871ee016e9336e28b434738d20960036d05a4.tar.bz2 llvm-918871ee016e9336e28b434738d20960036d05a4.tar.xz | |
make instcombine only rewrite a chain of computation
(eliminating some extends) if the new type of the
computation is legal or if both the source and dest
are illegal. This prevents instcombine from changing big
chains of computation into i64 on 32-bit targets for
example.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86398 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine/udivrem-change-width.ll')
| -rw-r--r-- | test/Transforms/InstCombine/udivrem-change-width.ll | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/udivrem-change-width.ll b/test/Transforms/InstCombine/udivrem-change-width.ll index 56877e30f9..9983944df8 100644 --- a/test/Transforms/InstCombine/udivrem-change-width.ll +++ b/test/Transforms/InstCombine/udivrem-change-width.ll @@ -1,6 +1,8 @@ ; RUN: opt < %s -instcombine -S | not grep zext ; PR4548 +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" + define i8 @udiv_i8(i8 %a, i8 %b) nounwind { %conv = zext i8 %a to i32 %conv2 = zext i8 %b to i32 |