diff options
Diffstat (limited to 'llvm/test/CodeGen/Hexagon/vsplat-ext.ll')
| -rw-r--r-- | llvm/test/CodeGen/Hexagon/vsplat-ext.ll | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Hexagon/vsplat-ext.ll b/llvm/test/CodeGen/Hexagon/vsplat-ext.ll new file mode 100644 index 00000000000..b2a2e8d5a53 --- /dev/null +++ b/llvm/test/CodeGen/Hexagon/vsplat-ext.ll @@ -0,0 +1,30 @@ +; RUN: llc -O2 -march=hexagon < %s | FileCheck %s + +; Hexagon's vsplatb/vsplath only consider the lower 8/16 bits of the source +; register. Any extension of the source is not necessary. + +; CHECK-NOT: zxtb +; CHECK-NOT: zxth + +target triple = "hexagon" + +; Function Attrs: nounwind readnone +define i64 @f0(i64 %a0) #0 { +b0: + %v0 = trunc i64 %a0 to i32 + %v1 = and i32 %v0, 65535 + %v2 = tail call i64 @llvm.hexagon.S2.vsplatrh(i32 %v1) + %v3 = and i32 %v0, 255 + %v4 = tail call i32 @llvm.hexagon.S2.vsplatrb(i32 %v3) + %v5 = sext i32 %v4 to i64 + %v6 = add nsw i64 %v5, %v2 + ret i64 %v6 +} + +; Function Attrs: nounwind readnone +declare i64 @llvm.hexagon.S2.vsplatrh(i32) #0 + +; Function Attrs: nounwind readnone +declare i32 @llvm.hexagon.S2.vsplatrb(i32) #0 + +attributes #0 = { nounwind readnone } |
