768598bcc3
This casuses assertion failures targeting 32-bit x86: lib/Target/X86/X86RegisterInfo.cpp:989: virtual bool llvm::X86RegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator, int, unsigned int, RegScavenger *) const: Assertion `(Is64Bit || FitsIn32Bits) && "Requesting 64-bit offset in 32-bit immediate!"' failed. See comment on the PR. > Fix 32-bit integer overflows in the X86 target frame layout when dealing > with frames larger than 4gb. When this occurs, we'll scavenge a scratch > register to be able to hold the correct stack offset for frame locals. > > This completes reapplying #84114. > > Fixes #48911 > Fixes #75944 > Fixes #87154 This reverts commit 0abb7791614947bc24931dd851ade31d02496977.
25 lines
956 B
LLVM
25 lines
956 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --no_x86_scrub_sp --version 4
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; RUN: llc -O0 -mtriple=x86_64 -verify-machineinstrs < %s | FileCheck %s --check-prefix=CHECK
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%large = type [4294967295 x i8]
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define void @foo() unnamed_addr #0 {
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; CHECK-LABEL: foo:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movabsq $8589934462, %rax # imm = 0x1FFFFFF7E
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; CHECK-NEXT: subq %rax, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 8589934470
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; CHECK-NEXT: movb $42, -129(%rsp)
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; CHECK-NEXT: movb $43, -128(%rsp)
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; CHECK-NEXT: movabsq $8589934462, %rax # imm = 0x1FFFFFF7E
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; CHECK-NEXT: addq %rax, %rsp
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; CHECK-NEXT: .cfi_def_cfa_offset 8
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; CHECK-NEXT: retq
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%1 = alloca %large, align 1
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%2 = alloca %large, align 1
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%3 = getelementptr inbounds %large, ptr %1, i64 0, i64 0
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store i8 42, ptr %3, align 1
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%4 = getelementptr inbounds %large, ptr %2, i64 0, i64 0
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store i8 43, ptr %4, align 1
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ret void
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}
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