diff options
Diffstat (limited to 'llvm/test/Transforms/InstCombine/cmp-intrinsic.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/cmp-intrinsic.ll | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/cmp-intrinsic.ll b/llvm/test/Transforms/InstCombine/cmp-intrinsic.ll new file mode 100644 index 00000000000..723a97f6ea1 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/cmp-intrinsic.ll @@ -0,0 +1,36 @@ +; RUN: opt < %s -instcombine -S | FileCheck %s + +declare i16 @llvm.bswap.i16(i16) +declare i32 @llvm.bswap.i32(i32) +declare <2 x i64> @llvm.bswap.v2i64(<2 x i64>) + +define i1 @bswap_eq_i16(i16 %x) { +; CHECK-LABEL: @bswap_eq_i16( +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i16 %x, 256 +; CHECK-NEXT: ret i1 [[CMP]] +; + %bs = call i16 @llvm.bswap.i16(i16 %x) + %cmp = icmp eq i16 %bs, 1 + ret i1 %cmp +} + +define i1 @bswap_ne_i32(i32 %x) { +; CHECK-LABEL: @bswap_ne_i32( +; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 %x, 33554432 +; CHECK-NEXT: ret i1 [[CMP]] +; + %bs = tail call i32 @llvm.bswap.i32(i32 %x) + %cmp = icmp ne i32 %bs, 2 + ret i1 %cmp +} + +define <2 x i1> @bswap_eq_v2i64(<2 x i64> %x) { +; CHECK-LABEL: @bswap_eq_v2i64( +; CHECK-NEXT: [[CMP:%.*]] = icmp eq <2 x i64> %x, <i64 216172782113783808, i64 216172782113783808> +; CHECK-NEXT: ret <2 x i1> [[CMP]] +; + %bs = tail call <2 x i64> @llvm.bswap.v2i64(<2 x i64> %x) + %cmp = icmp eq <2 x i64> %bs, <i64 3, i64 3> + ret <2 x i1> %cmp +} + |
