| ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \ |
| ; RUN: -mcpu=pwr9 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr < %s | \ |
| ; RUN: FileCheck %s |
| |
| ; These tests show that for 32-bit and 64-bit scalars, combining a shift to |
| ; a single multiply-high is only valid when the shift amount is the same as |
| ; the width of the narrow type. |
| |
| ; That is, combining a shift to mulh is only valid for 32-bit when the shift |
| ; amount is 32. |
| ; Likewise, combining a shift to mulh is only valid for 64-bit when the shift |
| ; amount is 64. |
| |
| define i32 @test_mulhw(i32 %a, i32 %b) { |
| ; CHECK-LABEL: test_mulhw: |
| ; CHECK: mulld |
| ; CHECK-NOT: mulhw |
| ; CHECK: blr |
| %1 = sext i32 %a to i64 |
| %2 = sext i32 %b to i64 |
| %mul = mul i64 %1, %2 |
| %shr = lshr i64 %mul, 33 |
| %tr = trunc i64 %shr to i32 |
| ret i32 %tr |
| } |
| |
| define i32 @test_mulhu(i32 %a, i32 %b) { |
| ; CHECK-LABEL: test_mulhu: |
| ; CHECK: mulld |
| ; CHECK-NOT: mulhwu |
| ; CHECK: blr |
| %1 = zext i32 %a to i64 |
| %2 = zext i32 %b to i64 |
| %mul = mul i64 %1, %2 |
| %shr = lshr i64 %mul, 33 |
| %tr = trunc i64 %shr to i32 |
| ret i32 %tr |
| } |
| |
| define i64 @test_mulhd(i64 %a, i64 %b) { |
| ; CHECK-LABEL: test_mulhd: |
| ; CHECK: mulhd |
| ; CHECK: mulld |
| ; CHECK: blr |
| %1 = sext i64 %a to i128 |
| %2 = sext i64 %b to i128 |
| %mul = mul i128 %1, %2 |
| %shr = lshr i128 %mul, 63 |
| %tr = trunc i128 %shr to i64 |
| ret i64 %tr |
| } |
| |
| define i64 @test_mulhdu(i64 %a, i64 %b) { |
| ; CHECK-LABEL: test_mulhdu: |
| ; CHECK: mulhdu |
| ; CHECK: mulld |
| ; CHECK: blr |
| %1 = zext i64 %a to i128 |
| %2 = zext i64 %b to i128 |
| %mul = mul i128 %1, %2 |
| %shr = lshr i128 %mul, 63 |
| %tr = trunc i128 %shr to i64 |
| ret i64 %tr |
| } |
| |
| define signext i32 @test_mulhw_signext(i32 %a, i32 %b) { |
| ; CHECK-LABEL: test_mulhw_signext: |
| ; CHECK: mulld |
| ; CHECK-NOT: mulhw |
| ; CHECK: blr |
| %1 = sext i32 %a to i64 |
| %2 = sext i32 %b to i64 |
| %mul = mul i64 %1, %2 |
| %shr = lshr i64 %mul, 33 |
| %tr = trunc i64 %shr to i32 |
| ret i32 %tr |
| } |
| |
| define zeroext i32 @test_mulhu_zeroext(i32 %a, i32 %b) { |
| ; CHECK-LABEL: test_mulhu_zeroext: |
| ; CHECK: mulld |
| ; CHECK-NOT: mulhwu |
| ; CHECK: blr |
| %1 = zext i32 %a to i64 |
| %2 = zext i32 %b to i64 |
| %mul = mul i64 %1, %2 |
| %shr = lshr i64 %mul, 33 |
| %tr = trunc i64 %shr to i32 |
| ret i32 %tr |
| } |
| |
| define signext i64 @test_mulhd_signext(i64 %a, i64 %b) { |
| ; CHECK-LABEL: test_mulhd_signext: |
| ; CHECK: mulhd |
| ; CHECK: mulld |
| ; CHECK: blr |
| %1 = sext i64 %a to i128 |
| %2 = sext i64 %b to i128 |
| %mul = mul i128 %1, %2 |
| %shr = lshr i128 %mul, 63 |
| %tr = trunc i128 %shr to i64 |
| ret i64 %tr |
| } |
| |
| define zeroext i64 @test_mulhdu_zeroext(i64 %a, i64 %b) { |
| ; CHECK-LABEL: test_mulhdu_zeroext: |
| ; CHECK: mulhdu |
| ; CHECK: mulld |
| ; CHECK: blr |
| %1 = zext i64 %a to i128 |
| %2 = zext i64 %b to i128 |
| %mul = mul i128 %1, %2 |
| %shr = lshr i128 %mul, 63 |
| %tr = trunc i128 %shr to i64 |
| ret i64 %tr |
| } |