; RUN: opt < %s -basicaa -basicaa-recphi=1 -gvn -S | FileCheck %s ; ; Check that section->word_ofs doesn't get reloaded in every iteration of the ; for loop. ; ; Code: ; ; typedef struct { ; unsigned num_words; ; unsigned word_ofs; ; const unsigned *data; ; } section_t; ; ; ; void test2(const section_t * restrict section, unsigned * restrict dst) {; ; while (section->data != NULL) { ; const unsigned *src = section->data; ; for (unsigned i=0; i < section->num_words; ++i) { ; dst[section->word_ofs + i] = src[i]; ; } ; ; ++section; ; } ; } ; ; CHECK-LABEL: for.body: ; CHECK-NOT: load i32, i32* %word_ofs %struct.section_t = type { i32, i32, i32* } define void @test2(%struct.section_t* noalias nocapture readonly %section, i32* noalias nocapture %dst) { entry: %data13 = getelementptr inbounds %struct.section_t, %struct.section_t* %section, i32 0, i32 2 %0 = load i32*, i32** %data13, align 4 %cmp14 = icmp eq i32* %0, null br i1 %cmp14, label %while.end, label %for.cond.preheader for.cond.preheader: ; preds = %entry, %for.end %1 = phi i32* [ %6, %for.end ], [ %0, %entry ] %section.addr.015 = phi %struct.section_t* [ %incdec.ptr, %for.end ], [ %section, %entry ] %num_words = getelementptr inbounds %struct.section_t, %struct.section_t* %section.addr.015, i32 0, i32 0 %2 = load i32, i32* %num_words, align 4 %cmp211 = icmp eq i32 %2, 0 br i1 %cmp211, label %for.end, label %for.body.lr.ph for.body.lr.ph: ; preds = %for.cond.preheader %word_ofs = getelementptr inbounds %struct.section_t, %struct.section_t* %section.addr.015, i32 0, i32 1 br label %for.body for.body: ; preds = %for.body.lr.ph, %for.body %arrayidx.phi = phi i32* [ %1, %for.body.lr.ph ], [ %arrayidx.inc, %for.body ] %i.012 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] %3 = load i32, i32* %arrayidx.phi, align 4 %4 = load i32, i32* %word_ofs, align 4 %add = add i32 %4, %i.012 %arrayidx3 = getelementptr inbounds i32, i32* %dst, i32 %add store i32 %3, i32* %arrayidx3, align 4 %inc = add i32 %i.012, 1 %5 = load i32, i32* %num_words, align 4 %cmp2 = icmp ult i32 %inc, %5 %arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1 br i1 %cmp2, label %for.body, label %for.end for.end: ; preds = %for.body, %for.cond.preheader %incdec.ptr = getelementptr inbounds %struct.section_t, %struct.section_t* %section.addr.015, i32 1 %data = getelementptr inbounds %struct.section_t, %struct.section_t* %section.addr.015, i32 1, i32 2 %6 = load i32*, i32** %data, align 4 %cmp = icmp eq i32* %6, null br i1 %cmp, label %while.end, label %for.cond.preheader while.end: ; preds = %for.end, %entry ret void }