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llvm-project/llvm/test/CodeGen/AArch64/implicit-sret.ll

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AArch64: Safely handle the incoming sret call argument. This adds a safe interface to the machine independent InputArg struct for accessing the index of the original (IR-level) argument. When a non-native return type is lowered, we generate the hidden machine-level sret argument on-the-fly. Before this fix, we were representing this argument as OrigArgIndex == 0, which is an outright lie. In particular this crashed in the AArch64 backend where we actually try to access the type of the original argument. Now we use a sentinel value for machine arguments that have no original argument index. AArch64, ARM, Mips, and PPC now check for this case before accessing the original argument. Fixes <rdar://19792160> Null pointer assertion in AArch64TargetLowering llvm-svn: 229413
2015-02-17 02:10:47 +08:00
; RUN: llc %s -o - -mtriple=arm64-apple-ios7.0 | FileCheck %s
;
; Handle implicit sret arguments that are generated on-the-fly during lowering.
; <rdar://19792160> Null pointer assertion in AArch64TargetLowering
; CHECK-LABEL: big_retval
; ... str or stp for the first 1024 bits
; CHECK: strb wzr, [x8, #128]
; CHECK: ret
define i1032 @big_retval() {
entry:
ret i1032 0
}