diff options
Diffstat (limited to 'llvm/test/CodeGen/PowerPC/bitfieldinsert.ll')
| -rw-r--r-- | llvm/test/CodeGen/PowerPC/bitfieldinsert.ll | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/llvm/test/CodeGen/PowerPC/bitfieldinsert.ll b/llvm/test/CodeGen/PowerPC/bitfieldinsert.ll index e654c7d8a0c..76a648b6f13 100644 --- a/llvm/test/CodeGen/PowerPC/bitfieldinsert.ll +++ b/llvm/test/CodeGen/PowerPC/bitfieldinsert.ll @@ -1,6 +1,35 @@ ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 < %s | FileCheck %s ; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr8 < %s | FileCheck %s +; equivalent C code +; struct s64 { +; int a:5; +; int b:16; +; long c:42; +; }; +; void bitfieldinsert64(struct s *p, unsigned short v) { +; p->b = v; +; } + +%struct.s64 = type { i64 } + +define void @bitfieldinsert64(%struct.s64* nocapture %p, i16 zeroext %v) { +; CHECK-LABEL: @bitfieldinsert64 +; CHECK: ld [[REG1:[0-9]+]], 0(3) +; CHECK-NEXT: rlwimi [[REG1]], 4, 5, 11, 26 +; CHECK-NEXT: std [[REG1]], 0(3) +; CHECK-NEXT: blr +entry: + %0 = getelementptr inbounds %struct.s64, %struct.s64* %p, i64 0, i32 0 + %1 = zext i16 %v to i64 + %bf.load = load i64, i64* %0, align 8 + %bf.shl = shl nuw nsw i64 %1, 5 + %bf.clear = and i64 %bf.load, -2097121 + %bf.set = or i64 %bf.clear, %bf.shl + store i64 %bf.set, i64* %0, align 8 + ret void +} + ; bitfieldinsert32: Test for rlwimi ; equivalent C code ; struct s32 { @@ -17,9 +46,9 @@ define void @bitfieldinsert32(%struct.s32* nocapture %p, i32 zeroext %v) { ; CHECK-LABEL: @bitfieldinsert32 ; CHECK: lwz [[REG1:[0-9]+]], 0(3) -; CHECK: rlwimi [[REG1]], 4, 8, 8, 23 -; CHECK: stw [[REG1]], 0(3) -; CHECK: blr +; CHECK-NEXT: rlwimi [[REG1]], 4, 8, 8, 23 +; CHECK-NEXT: stw [[REG1]], 0(3) +; CHECK-NEXT: blr entry: %0 = getelementptr inbounds %struct.s32, %struct.s32* %p, i64 0, i32 0 %bf.load = load i32, i32* %0, align 4 |
