invariant_base_ptr.ll
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; RUN: opt %loadPolly -polly-import-jscop \
; RUN: -polly-codegen -polly-invariant-load-hoisting -S \
; RUN: 2>&1 < %s | FileCheck %s
; Setting new access functions where the base pointer of the array that is newly
; accessed is only loaded within the scop itself caused incorrect code to be
; generated when invariant load hoisting is disabled. This test case checks
; that in case invariant load hoisting is enabled, we generate correct code.
; CHECK: %polly.access.polly.access.X.load = getelementptr float, float* %polly.access.X.load, i64 %polly.indvar
define void @invariant_base_ptr(float* noalias %Array, float** noalias %X,
float* noalias %C) {
start:
br label %loop
loop:
%indvar = phi i64 [0, %start], [%indvar.next, %latch]
%indvar.next = add i64 %indvar, 1
%cmp = icmp slt i64 %indvar, 1024
br i1 %cmp, label %body, label %exit
body:
%gep= getelementptr float, float* %Array, i64 %indvar
store float 42.0, float* %gep
br label %body2
body2:
%Base = load float*, float** %X
%gep2 = getelementptr float, float* %Base, i64 %indvar
%val2 = load float, float* %gep2
store float %val2, float* %C
br label %latch
latch:
br label %loop
exit:
ret void
}