diff options
Diffstat (limited to 'test/Transforms/InstCombine/bswap-fold.ll')
| -rw-r--r-- | test/Transforms/InstCombine/bswap-fold.ll | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/test/Transforms/InstCombine/bswap-fold.ll b/test/Transforms/InstCombine/bswap-fold.ll index 3e56951c6077..034c70e400ce 100644 --- a/test/Transforms/InstCombine/bswap-fold.ll +++ b/test/Transforms/InstCombine/bswap-fold.ll @@ -1,23 +1,22 @@ -; RUN: opt < %s -instcombine -S | grep ret | count 6 ; RUN: opt < %s -instcombine -S | not grep call.*bswap define i1 @test1(i16 %tmp2) { - %tmp10 = call i16 @llvm.bswap.i16( i16 %tmp2 ) ; <i16> [#uses=1] - %tmp = icmp eq i16 %tmp10, 1 ; <i1> [#uses=1] + %tmp10 = call i16 @llvm.bswap.i16( i16 %tmp2 ) + %tmp = icmp eq i16 %tmp10, 1 ret i1 %tmp } define i1 @test2(i32 %tmp) { - %tmp34 = tail call i32 @llvm.bswap.i32( i32 %tmp ) ; <i32> [#uses=1] - %tmp.upgrd.1 = icmp eq i32 %tmp34, 1 ; <i1> [#uses=1] + %tmp34 = tail call i32 @llvm.bswap.i32( i32 %tmp ) + %tmp.upgrd.1 = icmp eq i32 %tmp34, 1 ret i1 %tmp.upgrd.1 } declare i32 @llvm.bswap.i32(i32) define i1 @test3(i64 %tmp) { - %tmp34 = tail call i64 @llvm.bswap.i64( i64 %tmp ) ; <i64> [#uses=1] - %tmp.upgrd.2 = icmp eq i64 %tmp34, 1 ; <i1> [#uses=1] + %tmp34 = tail call i64 @llvm.bswap.i64( i64 %tmp ) + %tmp.upgrd.2 = icmp eq i64 %tmp34, 1 ret i1 %tmp.upgrd.2 } @@ -50,3 +49,21 @@ entry: ret i32 %tmp4 } +; PR5284 +declare i64 @llvm.bswap.i64(i64) +declare i32 @llvm.bswap.i32(i32) +declare i16 @llvm.bswap.i16(i16) + +define i16 @test7(i32 %A) { + %B = tail call i32 @llvm.bswap.i32(i32 %A) nounwind + %C = trunc i32 %B to i16 + %D = tail call i16 @llvm.bswap.i16(i16 %C) nounwind + ret i16 %D +} + +define i16 @test8(i64 %A) { + %B = tail call i64 @llvm.bswap.i64(i64 %A) nounwind + %C = trunc i64 %B to i16 + %D = tail call i16 @llvm.bswap.i16(i16 %C) nounwind + ret i16 %D +} |