327f1adef8
This was benign for Linux targets (as when dividing by the scale the offset would be correctly truncated), so only resulted in failures with `-DLLVM_ENABLE_ASSERTIONS=On`. On Windows, this was a miscompile as the lack of alignment would result in the FPR128 callee-save getting assigned to the same offset as the previous GPR. Fixes: #183708
39 lines
1.9 KiB
YAML
39 lines
1.9 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 6
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# RUN: llc -mtriple=aarch64-linux-gnu -run-pass=prologepilog %s -o - | FileCheck %s
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# RUN: llc -mtriple=aarch64-windows-msvc -run-pass=prologepilog %s -o - | FileCheck %s --check-prefix=CHECK-WINDOWS
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--- |
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; Tests Q8 is assigned a 16-byte aligned offset after X10 is assigned an offset.
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define preserve_allcc void @test_fpr128_spill_alignment() nounwind { entry: unreachable }
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...
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---
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name: test_fpr128_spill_alignment
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tracksRegLiveness: true
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body: |
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bb.0:
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; CHECK-LABEL: name: test_fpr128_spill_alignment
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; CHECK: liveins: $q8, $x10
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: early-clobber $sp = frame-setup STRQpre killed $q8, $sp, -32 :: (store (s128) into %stack.1)
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; CHECK-NEXT: frame-setup STRXui killed $x10, $sp, 3 :: (store (s64) into %stack.0)
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; CHECK-NEXT: $q8 = IMPLICIT_DEF
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; CHECK-NEXT: $x10 = IMPLICIT_DEF
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; CHECK-NEXT: $x10 = frame-destroy LDRXui $sp, 3 :: (load (s64) from %stack.0)
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; CHECK-NEXT: early-clobber $sp, $q8 = frame-destroy LDRQpost $sp, 32 :: (load (s128) from %stack.1)
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; CHECK-NEXT: RET_ReallyLR
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;
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; CHECK-WINDOWS-LABEL: name: test_fpr128_spill_alignment
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; CHECK-WINDOWS: liveins: $x10, $q8
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; CHECK-WINDOWS-NEXT: {{ $}}
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; CHECK-WINDOWS-NEXT: early-clobber $sp = frame-setup STRXpre killed $x10, $sp, -32 :: (store (s64) into %stack.1)
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; CHECK-WINDOWS-NEXT: frame-setup STRQui killed $q8, $sp, 1 :: (store (s128) into %stack.0)
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; CHECK-WINDOWS-NEXT: $q8 = IMPLICIT_DEF
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; CHECK-WINDOWS-NEXT: $x10 = IMPLICIT_DEF
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; CHECK-WINDOWS-NEXT: $q8 = frame-destroy LDRQui $sp, 1 :: (load (s128) from %stack.0)
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; CHECK-WINDOWS-NEXT: early-clobber $sp, $x10 = frame-destroy LDRXpost $sp, 32 :: (load (s64) from %stack.1)
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; CHECK-WINDOWS-NEXT: RET_ReallyLR
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$q8 = IMPLICIT_DEF
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$x10 = IMPLICIT_DEF
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RET_ReallyLR
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...
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