derek.holloway
7502bf64a4
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106 lines
3.1 KiB
LLVM
106 lines
3.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=riscv64 -mattr=+m -verify-machineinstrs < %s \
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; RUN: | FileCheck -check-prefixes=NO-PREFER-W-INST %s
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; RUN: llc -mtriple=riscv64 -mattr=+m -riscv-disable-strip-w-suffix -verify-machineinstrs < %s \
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; RUN: | FileCheck -check-prefixes=NO-STRIP %s
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; RUN: llc -mtriple=riscv64 -mattr=+m,+prefer-w-inst -verify-machineinstrs < %s \
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; RUN: | FileCheck -check-prefixes=PREFER-W-INST %s
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define i32 @addiw(i32 %a) {
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; NO-PREFER-W-INST-LABEL: addiw:
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; NO-PREFER-W-INST: # %bb.0:
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; NO-PREFER-W-INST-NEXT: lui a1, 1
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; NO-PREFER-W-INST-NEXT: addi a1, a1, -1
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; NO-PREFER-W-INST-NEXT: addw a0, a0, a1
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; NO-PREFER-W-INST-NEXT: ret
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;
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; NO-STRIP-LABEL: addiw:
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; NO-STRIP: # %bb.0:
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; NO-STRIP-NEXT: lui a1, 1
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; NO-STRIP-NEXT: addi a1, a1, -1
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; NO-STRIP-NEXT: addw a0, a0, a1
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; NO-STRIP-NEXT: ret
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;
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; PREFER-W-INST-LABEL: addiw:
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; PREFER-W-INST: # %bb.0:
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; PREFER-W-INST-NEXT: lui a1, 1
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; PREFER-W-INST-NEXT: addiw a1, a1, -1
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; PREFER-W-INST-NEXT: addw a0, a0, a1
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; PREFER-W-INST-NEXT: ret
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%ret = add i32 %a, 4095
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ret i32 %ret
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}
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define i32 @addw(i32 %a, i32 %b) {
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; NO-PREFER-W-INST-LABEL: addw:
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; NO-PREFER-W-INST: # %bb.0:
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; NO-PREFER-W-INST-NEXT: add a0, a0, a1
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; NO-PREFER-W-INST-NEXT: addiw a0, a0, 1024
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; NO-PREFER-W-INST-NEXT: ret
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;
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; NO-STRIP-LABEL: addw:
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; NO-STRIP: # %bb.0:
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; NO-STRIP-NEXT: addw a0, a0, a1
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; NO-STRIP-NEXT: addiw a0, a0, 1024
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; NO-STRIP-NEXT: ret
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;
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; PREFER-W-INST-LABEL: addw:
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; PREFER-W-INST: # %bb.0:
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; PREFER-W-INST-NEXT: addw a0, a0, a1
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; PREFER-W-INST-NEXT: addiw a0, a0, 1024
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; PREFER-W-INST-NEXT: ret
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%add = add i32 %a, %b
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%ret = add i32 %add, 1024
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ret i32 %ret
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}
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define i32 @mulw(i32 %a, i32 %b) {
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; NO-PREFER-W-INST-LABEL: mulw:
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; NO-PREFER-W-INST: # %bb.0:
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; NO-PREFER-W-INST-NEXT: mul a1, a0, a1
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; NO-PREFER-W-INST-NEXT: mul a0, a0, a1
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; NO-PREFER-W-INST-NEXT: addiw a0, a0, 1024
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; NO-PREFER-W-INST-NEXT: ret
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;
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; NO-STRIP-LABEL: mulw:
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; NO-STRIP: # %bb.0:
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; NO-STRIP-NEXT: mulw a1, a0, a1
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; NO-STRIP-NEXT: mulw a0, a0, a1
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; NO-STRIP-NEXT: addiw a0, a0, 1024
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; NO-STRIP-NEXT: ret
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;
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; PREFER-W-INST-LABEL: mulw:
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; PREFER-W-INST: # %bb.0:
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; PREFER-W-INST-NEXT: mulw a1, a0, a1
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; PREFER-W-INST-NEXT: mulw a0, a0, a1
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; PREFER-W-INST-NEXT: addiw a0, a0, 1024
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; PREFER-W-INST-NEXT: ret
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%mul1 = mul i32 %a, %b
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%mul = mul i32 %a, %mul1
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%ret = add i32 %mul, 1024
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ret i32 %ret
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}
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define i32 @slliw(i32 %a) {
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; NO-PREFER-W-INST-LABEL: slliw:
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; NO-PREFER-W-INST: # %bb.0:
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; NO-PREFER-W-INST-NEXT: slli a0, a0, 1
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; NO-PREFER-W-INST-NEXT: addiw a0, a0, 1024
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; NO-PREFER-W-INST-NEXT: ret
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;
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; NO-STRIP-LABEL: slliw:
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; NO-STRIP: # %bb.0:
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; NO-STRIP-NEXT: slliw a0, a0, 1
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; NO-STRIP-NEXT: addiw a0, a0, 1024
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; NO-STRIP-NEXT: ret
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;
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; PREFER-W-INST-LABEL: slliw:
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; PREFER-W-INST: # %bb.0:
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; PREFER-W-INST-NEXT: slliw a0, a0, 1
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; PREFER-W-INST-NEXT: addiw a0, a0, 1024
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; PREFER-W-INST-NEXT: ret
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%shl = shl i32 %a, 1
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%ret = add i32 %shl, 1024
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ret i32 %ret
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}
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