http://llvm.org/bugs/show_bug.cgi?id=10747
Zoltan Varga <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED Resolution|FIXED | --- Comment #5 from Zoltan Varga <[email protected]> 2011-12-26 12:18:19 CST --- This is not entirely fixed, here is another testcase, which also fails since r131183: <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ; ModuleID = 'temp.opt.bc' define i32 @main() { BB0: %r0 = alloca <4 x i32>, align 16 %r1 = getelementptr <4 x i32>* %r0, i32 0, i32 3 store i32 4, i32* %r1 %r2 = getelementptr <4 x i32>* %r0, i32 0, i32 2 store i32 3, i32* %r2 %r3 = getelementptr <4 x i32>* %r0, i32 0, i32 1 store i32 2, i32* %r3 %r4 = getelementptr inbounds <4 x i32>* %r0, i32 0, i32 0 store i32 1, i32* %r4 %r7 = load <4 x i32>* %r0, align 1 store i32 8, i32* %r1 store i32 7, i32* %r2 store i32 6, i32* %r3 store i32 5, i32* %r4 %r8 = load <4 x i32>* %r0, align 1 %r9 = extractelement <4 x i32> %r7, i32 2 %r10 = icmp eq i32 %r9, 3 br i1 %r10, label %BB4, label %BB1 BB4: ; preds = %BB0 %r11 = extractelement <4 x i32> %r8, i32 2 %r12 = icmp eq i32 %r11, 7 br i1 %r12, label %BB6, label %BB1 BB6: ; preds = %BB4 %r13 = extractelement <4 x i32> %r7, i32 3 %r14 = icmp eq i32 %r13, 4 br i1 %r14, label %BB8, label %BB1 BB8: ; preds = %BB6 br label %BB1 BB1: ; preds = %BB8, %BB6, %BB4, %BB0 %r17 = phi i32 [ 1, %BB0 ], [ 2, %BB4 ], [ 3, %BB6 ], [ 0, %BB8 ] ret i32 %r17 } >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Compile using: llvm-as -o temp.bc bug.ll && llc -march=x86-64 -o temp.s temp.bc && gcc temp.s This should exit with exit code 0, but it exits with code 3. It looks like this load: %r7 = load <4 x i32>* %r0, align 1 gets moved pasts the stores which alias it. -- Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. _______________________________________________ LLVMbugs mailing list [email protected] http://lists.cs.uiuc.edu/mailman/listinfo/llvmbugs
