; RUN: opt < %s -instcombine -S | FileCheck %s ; Converting the 2 shifts to SHL 6 without the AND is wrong. PR 8547. @g_2 = global i32 0, align 4 @.str = constant [10 x i8] c"g_2 = %d\0A\00" declare i32 @printf(i8*, ...) define i32 @main() nounwind { codeRepl: br label %for.cond for.cond: ; preds = %for.cond, %codeRepl %storemerge = phi i32 [ 0, %codeRepl ], [ 5, %for.cond ] store i32 %storemerge, i32* @g_2, align 4 %shl = shl i32 %storemerge, 30 %conv2 = lshr i32 %shl, 24 ; CHECK: %0 = shl nuw nsw i32 %storemerge, 6 ; CHECK: %conv2 = and i32 %0, 64 %tobool = icmp eq i32 %conv2, 0 br i1 %tobool, label %for.cond, label %codeRepl2 codeRepl2: ; preds = %for.cond %call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i32 %conv2) nounwind ret i32 0 }