derek.holloway
7502bf64a4
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25 lines
986 B
LLVM
25 lines
986 B
LLVM
; RUN: llc -mtriple riscv32 -mattr=+experimental-zicfilp,+relax,+c < %s | FileCheck %s
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; RUN: llc -mtriple riscv64 -mattr=+experimental-zicfilp,+relax,+c < %s | FileCheck %s
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; Test that when Zicfilp is enabled but the cf-protection-branch module flag
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; is NOT set, no LPAD is inserted AFTER the setjmp call and no .option push/exact
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; workaround is applied. The function entry LPAD is still generated by Zicfilp,
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; but the special returns_twice handling is not triggered.
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declare i32 @setjmp(ptr) returns_twice
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define i32 @test_no_cf_protection() {
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; CHECK-LABEL: test_no_cf_protection:
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; CHECK-NOT: .option exact
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; CHECK: call setjmp
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; Verify no lpad immediately after setjmp (next instruction is register reload).
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; Use regex to match both lw (RV32) and ld (RV64).
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; CHECK-NEXT: {{(lw|ld)}} ra,
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%buf = alloca [1 x i32], align 4
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%call = call i32 @setjmp(ptr %buf)
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ret i32 %call
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}
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; Note: No !llvm.module.flags with cf-protection-branch - this is intentional.
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