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461274b81d
This include 2 fixes:
1. Disallow 'f' for softfloat.
2. Allow 'r' for softfloat.
Currently, 'f' is accpeted by clang, then LLVM meets an internal error.
'r' is rejected by LLVM by: couldn't allocate input reg for constraint
'r'.
Fixes: #64241, #63632
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Co-authored-by: Fangrui Song <i@maskray.me>
(cherry picked from commit c88beb4112d5bbf07d76a615ab7f13ba2ba023e6)
49 lines
1.4 KiB
LLVM
49 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
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; RUN: llc -march=mips < %s | FileCheck %s --check-prefix=MIPS32
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; RUN: llc -march=mips64 < %s | FileCheck %s --check-prefix=MIPS64
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define dso_local void @read_double(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
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; MIPS32-LABEL: read_double:
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; MIPS32: # %bb.0:
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; MIPS32-NEXT: lw $2, 4($4)
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; MIPS32-NEXT: lw $3, 0($4)
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; MIPS32-NEXT: #APP
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; MIPS32-NEXT: #NO_APP
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; MIPS32-NEXT: jr $ra
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; MIPS32-NEXT: nop
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;
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; MIPS64-LABEL: read_double:
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; MIPS64: # %bb.0:
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; MIPS64-NEXT: ld $2, 0($4)
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; MIPS64-NEXT: #APP
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; MIPS64-NEXT: #NO_APP
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; MIPS64-NEXT: jr $ra
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; MIPS64-NEXT: nop
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%2 = load double, ptr %0, align 8
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tail call void asm sideeffect "", "r,~{$1}"(double %2)
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ret void
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}
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define dso_local void @read_float(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
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; MIPS32-LABEL: read_float:
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; MIPS32: # %bb.0:
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; MIPS32-NEXT: lw $2, 0($4)
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; MIPS32-NEXT: #APP
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; MIPS32-NEXT: #NO_APP
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; MIPS32-NEXT: jr $ra
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; MIPS32-NEXT: nop
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;
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; MIPS64-LABEL: read_float:
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; MIPS64: # %bb.0:
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; MIPS64-NEXT: lw $2, 0($4)
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; MIPS64-NEXT: #APP
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; MIPS64-NEXT: #NO_APP
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; MIPS64-NEXT: jr $ra
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; MIPS64-NEXT: nop
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%2 = load float, ptr %0, align 8
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tail call void asm sideeffect "", "r,~{$1}"(float %2)
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ret void
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}
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attributes #0 = { "target-features"="+soft-float" "use-soft-float"="true" }
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