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fc231e5848
- recommitting after fixing a test failure on MacOS On PPC64, OR (XOR) with a 32-bit immediate can be done with only two instructions, i.e. ori + oris. But the current LLVM generates three or four instructions for this purpose (and also it clobbers one GPR). This patch makes PPC backend generate ori + oris (xori + xoris) for OR (XOR) with a 32-bit immediate. e.g. (x | 0xFFFFFFFF) should be ori 3, 3, 65535 oris 3, 3, 65535 but LLVM generates without this patch li 4, 0 oris 4, 4, 65535 ori 4, 4, 65535 or 3, 3, 4 Differential Revision: https://reviews.llvm.org/D34757 llvm-svn: 311538
97 lines
1.9 KiB
LLVM
97 lines
1.9 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64le-unknown-linux-gnu | FileCheck %s
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; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu | FileCheck %s
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define i64 @ori_test_a(i64 %a) {
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entry:
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; CHECK-LABEL: @ori_test_a
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; CHECK-DAG: ori 3, 3, 65535
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; CHECK-DAG: oris 3, 3, 65535
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; CHECK-NEXT: blr
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%or = or i64 %a, 4294967295
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ret i64 %or
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}
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define i64 @ori_test_b(i64 %a) {
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entry:
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; CHECK-LABEL: @ori_test_b
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; CHECK: or 3, 3, {{[0-9]+}}
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; CHECK-NEXT: blr
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%or = or i64 %a, 4294967296
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ret i64 %or
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}
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define i64 @ori_test_c(i64 %a) {
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entry:
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; CHECK-LABEL: @ori_test_c
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; CHECK: ori 3, 3, 65535
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; CHECK-NEXT: blr
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%or = or i64 %a, 65535
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ret i64 %or
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}
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define i64 @ori_test_d(i64 %a) {
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entry:
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; CHECK-LABEL: @ori_test_d
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; CHECK: oris 3, 3, 1
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; CHECK-NEXT: blr
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%or = or i64 %a, 65536
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ret i64 %or
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}
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define zeroext i32 @ori_test_e(i32 zeroext %a) {
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entry:
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; CHECK-LABEL: @ori_test_e
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; CHECK-DAG: ori 3, 3, 65535
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; CHECK-DAG: oris 3, 3, 255
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; CHECK-NEXT: blr
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%or = or i32 %a, 16777215
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ret i32 %or
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}
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define i64 @xori_test_a(i64 %a) {
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entry:
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; CHECK-LABEL: @xori_test_a
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; CHECK-DAG: xori 3, 3, 65535
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; CHECK-DAG: xoris 3, 3, 65535
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; CHECK-NEXT: blr
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%xor = xor i64 %a, 4294967295
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ret i64 %xor
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}
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define i64 @xori_test_b(i64 %a) {
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entry:
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; CHECK-LABEL: @xori_test_b
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; CHECK: xor 3, 3, {{[0-9]+}}
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; CHECK-NEXT: blr
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%xor = xor i64 %a, 4294967296
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ret i64 %xor
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}
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define i64 @xori_test_c(i64 %a) {
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entry:
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; CHECK-LABEL: @xori_test_c
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; CHECK: xori 3, 3, 65535
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; CHECK-NEXT: blr
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%xor = xor i64 %a, 65535
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ret i64 %xor
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}
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define i64 @xori_test_d(i64 %a) {
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entry:
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; CHECK-LABEL: @xori_test_d
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; CHECK: xoris 3, 3, 1
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; CHECK-NEXT: blr
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%xor = xor i64 %a, 65536
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ret i64 %xor
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}
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define zeroext i32 @xori_test_e(i32 zeroext %a) {
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entry:
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; CHECK-LABEL: @xori_test_e
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; CHECK-DAG: xori 3, 3, 65535
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; CHECK-DAG: xoris 3, 3, 255
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; CHECK-NEXT: blr
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%xor = xor i32 %a, 16777215
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ret i32 %xor
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}
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