3d7eedce56
The shadow trimming loop in LowerSTACKMAP hardcoded a 4-byte decrement per instruction, but when Zca is enabled NOPs are 2 bytes. Use NOPBytes instead of the hardcoded 4 so the shadow is correctly trimmed on compressed targets. Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
29 lines
791 B
LLVM
29 lines
791 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=riscv64 | FileCheck %s --check-prefix=CHECK
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; RUN: llc < %s -mtriple=riscv64 -mattr=+c | FileCheck %s --check-prefix=RVC
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define void @test_shadow_optimization() {
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; CHECK-LABEL: test_shadow_optimization:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: .Ltmp0:
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; CHECK-NEXT: nop
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; CHECK-NEXT: nop
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; CHECK-NEXT: nop
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; CHECK-NEXT: ret
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;
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; RVC-LABEL: test_shadow_optimization:
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; RVC: # %bb.0: # %entry
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; RVC-NEXT: .Ltmp0:
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; RVC-NEXT: nop
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; RVC-NEXT: nop
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; RVC-NEXT: nop
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; RVC-NEXT: nop
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; RVC-NEXT: nop
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; RVC-NEXT: nop
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; RVC-NEXT: nop
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; RVC-NEXT: ret
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entry:
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tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 0, i32 16)
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ret void
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}
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