llvm-6502/test/CodeGen/AArch64/implicit-sret.ll

; 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
}
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229413 91177308-0d34-0410-b5e6-96231b3b80d8 2015-02-16 18:10:47 +00:00			`; 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`
			`}`