gep-negative-issue.ll
2.43 KB
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; RUN: opt -gvn -S < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-p100:128:64:64-p101:128:64:64"
target triple = "x86_64-unknown-linux-gnu"
%ArrayImpl = type { i64, i64 addrspace(100)*, [1 x i64], [1 x i64], [1 x i64], i64, i64, double addrspace(100)*, double addrspace(100)*, i8, i64 }
%_array = type { i64, %ArrayImpl addrspace(100)*, i8 }
define void @test(i64 %n_chpl) {
entry:
; First section is some code
%0 = getelementptr inbounds %_array, %_array* null, i32 0, i32 1
%1 = load %ArrayImpl addrspace(100)*, %ArrayImpl addrspace(100)** %0
%2 = getelementptr inbounds %ArrayImpl, %ArrayImpl addrspace(100)* %1, i32 0, i32 8
%3 = load double addrspace(100)*, double addrspace(100)* addrspace(100)* %2
%4 = getelementptr inbounds double, double addrspace(100)* %3, i64 -1
; Second section is that code repeated
%x0 = getelementptr inbounds %_array, %_array* null, i32 0, i32 1
%x1 = load %ArrayImpl addrspace(100)*, %ArrayImpl addrspace(100)** %x0
%x2 = getelementptr inbounds %ArrayImpl, %ArrayImpl addrspace(100)* %x1, i32 0, i32 8
%x3 = load double addrspace(100)*, double addrspace(100)* addrspace(100)* %x2
%x4 = getelementptr inbounds double, double addrspace(100)* %x3, i64 -1
; These two stores refer to the same memory location
; Even so, they are expected to remain separate stores here
store double 0.000000e+00, double addrspace(100)* %4
store double 0.000000e+00, double addrspace(100)* %x4
; Third section is the repeated code again, with a later store
; This third section is necessary to trigger the crash
%y1 = load %ArrayImpl addrspace(100)*, %ArrayImpl addrspace(100)** %0
%y2 = getelementptr inbounds %ArrayImpl, %ArrayImpl addrspace(100)* %y1, i32 0, i32 8
%y3 = load double addrspace(100)*, double addrspace(100)* addrspace(100)* %y2
%y4 = getelementptr inbounds double, double addrspace(100)* %y3, i64 -1
store double 0.000000e+00, double addrspace(100)* %y4
ret void
; CHECK-LABEL: define void @test
; CHECK: getelementptr inbounds double, double addrspace(100)* {{%.*}}, i64 -1
; CHECK-NEXT: store double 0.000000e+00, double addrspace(100)* [[DST:%.*]]
; CHECK-NEXT: store double 0.000000e+00, double addrspace(100)* [[DST]]
; CHECK: load
; CHECK: getelementptr inbounds %ArrayImpl, %ArrayImpl addrspace(100)*
; CHECK: load
; CHECK: getelementptr inbounds double, double addrspace(100)* {{%.*}}, i64 -1
; CHECK: store double 0.000000e+00, double addrspace(100)*
; CHECK: ret
}