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[SystemZ] Implement llvm.get.dynamic.area.offset
To be used for AddressSanitizer. Differential Revision: http://reviews.llvm.org/D19817 llvm-svn: 268572
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Original file line number | Diff line number | Diff line change |
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s | ||
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declare i64 @llvm.get.dynamic.area.offset.i64() | ||
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declare void @use(i64) | ||
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define void @f1() { | ||
; CHECK-LABEL: f1 | ||
; CHECK: la %r2, 160 | ||
; CHECK: brasl %r14, use | ||
; CHECK: br %r14 | ||
%tmp = alloca i64, align 32 | ||
%dynamic_area_offset = call i64 @llvm.get.dynamic.area.offset.i64() | ||
call void @use(i64 %dynamic_area_offset) | ||
ret void | ||
} | ||
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define void @f2(i64 %arg) { | ||
; CHECK-LABEL: f2 | ||
; CHECK: la %r2, 160(%r2) | ||
; CHECK: brasl %r14, use | ||
; CHECK: br %r14 | ||
%tmp = alloca i64, align 32 | ||
%dynamic_area_offset = call i64 @llvm.get.dynamic.area.offset.i64() | ||
%param = add i64 %dynamic_area_offset, %arg | ||
call void @use(i64 %param) | ||
ret void | ||
} | ||
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declare void @eatsalot(i64, i64, i64, i64, i64, i64) | ||
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define void @f3() { | ||
; CHECK-LABEL: f3 | ||
; CHECK: la %r2, 168 | ||
; CHECK: brasl %r14, use | ||
; CHECK: br %r14 | ||
%tmp = alloca i64, align 32 | ||
call void @eatsalot(i64 0, i64 0, i64 0, i64 0, i64 0, i64 0) | ||
%dynamic_area_offset = call i64 @llvm.get.dynamic.area.offset.i64() | ||
call void @use(i64 %dynamic_area_offset) | ||
ret void | ||
} |