fed6107dcb
We may meet Invalid CTR loop crash when there's constrained ops inside. This patch adds constrained FP intrinsics to the list so that CTR loop verification doesn't complain about it. Reviewed By: steven.zhang Differential Revision: https://reviews.llvm.org/D81924
88 lines
2.8 KiB
LLVM
88 lines
2.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple powerpc64le < %s | FileCheck %s
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; Check constrained ops converted to call
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define void @test(double* %cast) {
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; CHECK-LABEL: test:
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; CHECK: # %bb.0: # %root
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; CHECK-NEXT: mflr 0
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; CHECK-NEXT: .cfi_def_cfa_offset 64
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; CHECK-NEXT: .cfi_offset lr, 16
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; CHECK-NEXT: .cfi_offset r29, -24
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; CHECK-NEXT: .cfi_offset r30, -16
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; CHECK-NEXT: std 29, -24(1) # 8-byte Folded Spill
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; CHECK-NEXT: std 30, -16(1) # 8-byte Folded Spill
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; CHECK-NEXT: std 0, 16(1)
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; CHECK-NEXT: stdu 1, -64(1)
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; CHECK-NEXT: li 30, 0
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; CHECK-NEXT: addi 29, 3, -8
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; CHECK-NEXT: .p2align 5
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; CHECK-NEXT: .LBB0_1: # %for.body
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; CHECK-NEXT: #
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; CHECK-NEXT: lfdu 1, 8(29)
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; CHECK-NEXT: bl cos
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; CHECK-NEXT: nop
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; CHECK-NEXT: addi 30, 30, 8
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; CHECK-NEXT: stfdx 1, 0, 29
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; CHECK-NEXT: cmpldi 30, 2040
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; CHECK-NEXT: bne 0, .LBB0_1
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; CHECK-NEXT: # %bb.2: # %exit
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; CHECK-NEXT: addi 1, 1, 64
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; CHECK-NEXT: ld 0, 16(1)
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; CHECK-NEXT: ld 30, -16(1) # 8-byte Folded Reload
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; CHECK-NEXT: ld 29, -24(1) # 8-byte Folded Reload
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; CHECK-NEXT: mtlr 0
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; CHECK-NEXT: blr
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root:
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br label %for.body
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exit:
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ret void
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for.body:
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%i = phi i64 [ 0, %root ], [ %next, %for.body ]
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%idx = getelementptr inbounds double, double* %cast, i64 %i
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%val = load double, double* %idx
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%cos = tail call nnan ninf nsz arcp double @llvm.experimental.constrained.cos.f64(double %val, metadata !"round.dynamic", metadata !"fpexcept.strict")
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store double %cos, double* %idx, align 8
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%next = add nuw nsw i64 %i, 1
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%cond = icmp eq i64 %next, 255
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br i1 %cond, label %exit, label %for.body
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}
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; Check constrained ops converted to native instruction
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define void @test2(double* %cast) {
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; CHECK-LABEL: test2:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: li 4, 255
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; CHECK-NEXT: addi 3, 3, -8
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; CHECK-NEXT: mtctr 4
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; CHECK-NEXT: .p2align 4
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; CHECK-NEXT: .LBB1_1: # %for.body
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; CHECK-NEXT: #
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; CHECK-NEXT: lfdu 0, 8(3)
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; CHECK-NEXT: xssqrtdp 0, 0
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; CHECK-NEXT: stfdx 0, 0, 3
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; CHECK-NEXT: bdnz .LBB1_1
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; CHECK-NEXT: # %bb.2: # %exit
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; CHECK-NEXT: blr
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %next, %for.body ]
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%idx = getelementptr inbounds double, double* %cast, i64 %i
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%val = load double, double* %idx
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%cos = tail call nnan ninf nsz arcp double @llvm.experimental.constrained.sqrt.f64(double %val, metadata !"round.dynamic", metadata !"fpexcept.strict")
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store double %cos, double* %idx, align 8
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%next = add nuw nsw i64 %i, 1
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%cond = icmp eq i64 %next, 255
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br i1 %cond, label %exit, label %for.body
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exit:
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ret void
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}
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declare double @llvm.experimental.constrained.cos.f64(double, metadata, metadata)
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declare double @llvm.experimental.constrained.sqrt.f64(double, metadata, metadata)
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