| ; Test that we can use OI for byte operations that are expressed as i32 |
| ; or i64 operations. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| ; Zero extension to 32 bits, negative constant. |
| define void @f1(i8 *%ptr) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: oi 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, i8 *%ptr |
| %ext = zext i8 %val to i32 |
| %or = or i32 %ext, -2 |
| %trunc = trunc i32 %or to i8 |
| store i8 %trunc, i8 *%ptr |
| ret void |
| } |
| |
| ; Zero extension to 64 bits, negative constant. |
| define void @f2(i8 *%ptr) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: oi 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, i8 *%ptr |
| %ext = zext i8 %val to i64 |
| %or = or i64 %ext, -2 |
| %trunc = trunc i64 %or to i8 |
| store i8 %trunc, i8 *%ptr |
| ret void |
| } |
| |
| ; Zero extension to 32 bits, positive constant. |
| define void @f3(i8 *%ptr) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: oi 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, i8 *%ptr |
| %ext = zext i8 %val to i32 |
| %or = or i32 %ext, 254 |
| %trunc = trunc i32 %or to i8 |
| store i8 %trunc, i8 *%ptr |
| ret void |
| } |
| |
| ; Zero extension to 64 bits, positive constant. |
| define void @f4(i8 *%ptr) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: oi 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, i8 *%ptr |
| %ext = zext i8 %val to i64 |
| %or = or i64 %ext, 254 |
| %trunc = trunc i64 %or to i8 |
| store i8 %trunc, i8 *%ptr |
| ret void |
| } |
| |
| ; Sign extension to 32 bits, negative constant. |
| define void @f5(i8 *%ptr) { |
| ; CHECK-LABEL: f5: |
| ; CHECK: oi 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, i8 *%ptr |
| %ext = sext i8 %val to i32 |
| %or = or i32 %ext, -2 |
| %trunc = trunc i32 %or to i8 |
| store i8 %trunc, i8 *%ptr |
| ret void |
| } |
| |
| ; Sign extension to 64 bits, negative constant. |
| define void @f6(i8 *%ptr) { |
| ; CHECK-LABEL: f6: |
| ; CHECK: oi 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, i8 *%ptr |
| %ext = sext i8 %val to i64 |
| %or = or i64 %ext, -2 |
| %trunc = trunc i64 %or to i8 |
| store i8 %trunc, i8 *%ptr |
| ret void |
| } |
| |
| ; Sign extension to 32 bits, positive constant. |
| define void @f7(i8 *%ptr) { |
| ; CHECK-LABEL: f7: |
| ; CHECK: oi 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, i8 *%ptr |
| %ext = sext i8 %val to i32 |
| %or = or i32 %ext, 254 |
| %trunc = trunc i32 %or to i8 |
| store i8 %trunc, i8 *%ptr |
| ret void |
| } |
| |
| ; Sign extension to 64 bits, positive constant. |
| define void @f8(i8 *%ptr) { |
| ; CHECK-LABEL: f8: |
| ; CHECK: oi 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, i8 *%ptr |
| %ext = sext i8 %val to i64 |
| %or = or i64 %ext, 254 |
| %trunc = trunc i64 %or to i8 |
| store i8 %trunc, i8 *%ptr |
| ret void |
| } |