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| author | Sanjay Patel <spatel@rotateright.com> | 2017-08-04 20:38:33 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2017-08-04 20:38:33 +0000 |
| commit | 73ab438c480299110c84cc2b5677312dc97b5431 (patch) | |
| tree | 0a4a250c345dfba49fef0c399c795b71330a5d32 | |
| parent | bbe96e50f3bec29588bb873842e2b438536d3efc (diff) | |
| download | bcm5719-llvm-73ab438c480299110c84cc2b5677312dc97b5431.tar.gz bcm5719-llvm-73ab438c480299110c84cc2b5677312dc97b5431.zip | |
[InstCombine] add vector tests for truncated math; NFC
llvm-svn: 310122
| -rw-r--r-- | llvm/test/Transforms/InstCombine/trunc.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/trunc.ll b/llvm/test/Transforms/InstCombine/trunc.ll index 3ba0b866e47..d606815f9bb 100644 --- a/llvm/test/Transforms/InstCombine/trunc.ll +++ b/llvm/test/Transforms/InstCombine/trunc.ll @@ -533,3 +533,25 @@ define <8 x i8> @wide_lengthening_splat(<4 x i16> %v) { ret <8 x i8> %tr } +define <2 x i8> @narrow_add_vec_constant(<2 x i32> %x) { +; CHECK-LABEL: @narrow_add_vec_constant( +; CHECK-NEXT: [[ADD:%.*]] = add <2 x i32> %x, <i32 256, i32 -129> +; CHECK-NEXT: [[TR:%.*]] = trunc <2 x i32> [[ADD]] to <2 x i8> +; CHECK-NEXT: ret <2 x i8> [[TR]] +; + %add = add <2 x i32> %x, <i32 256, i32 -129> + %tr = trunc <2 x i32> %add to <2 x i8> + ret <2 x i8> %tr +} + +define <2 x i8> @narrow_sub_vec_constant(<2 x i32> %x) { +; CHECK-LABEL: @narrow_sub_vec_constant( +; CHECK-NEXT: [[SUB:%.*]] = sub <2 x i32> <i32 256, i32 -129>, %x +; CHECK-NEXT: [[TR:%.*]] = trunc <2 x i32> [[SUB]] to <2 x i8> +; CHECK-NEXT: ret <2 x i8> [[TR]] +; + %sub = sub <2 x i32> <i32 256, i32 -129>, %x + %tr = trunc <2 x i32> %sub to <2 x i8> + ret <2 x i8> %tr +} + |
