@array = weak global [4 x i32] zeroinitializer
define i32 @test_lshr_and(i32 %x) {
-; CHECK: test_lshr_and:
+; CHECK-LABEL: test_lshr_and:
; CHECK-NOT: shrl
; CHECK: andl $12,
; CHECK: movl {{.*}}array{{.*}},
entry:
%tmp2 = lshr i32 %x, 2
%tmp3 = and i32 %tmp2, 3
- %tmp4 = getelementptr [4 x i32]* @array, i32 0, i32 %tmp3
- %tmp5 = load i32* %tmp4, align 4
+ %tmp4 = getelementptr [4 x i32], [4 x i32]* @array, i32 0, i32 %tmp3
+ %tmp5 = load i32, i32* %tmp4, align 4
ret i32 %tmp5
}
+define i32* @test_exact1(i32 %a, i32 %b, i32* %x) {
+; CHECK-LABEL: test_exact1:
+; CHECK: sarl %
+
+ %sub = sub i32 %b, %a
+ %shr = ashr exact i32 %sub, 3
+ %gep = getelementptr inbounds i32, i32* %x, i32 %shr
+ ret i32* %gep
+}
+
+define i32* @test_exact2(i32 %a, i32 %b, i32* %x) {
+; CHECK-LABEL: test_exact2:
+; CHECK: sarl %
+
+ %sub = sub i32 %b, %a
+ %shr = ashr exact i32 %sub, 3
+ %gep = getelementptr inbounds i32, i32* %x, i32 %shr
+ ret i32* %gep
+}
+
+define i32* @test_exact3(i32 %a, i32 %b, i32* %x) {
+; CHECK-LABEL: test_exact3:
+; CHECK-NOT: sarl
+
+ %sub = sub i32 %b, %a
+ %shr = ashr exact i32 %sub, 2
+ %gep = getelementptr inbounds i32, i32* %x, i32 %shr
+ ret i32* %gep
+}
+
+define i32* @test_exact4(i32 %a, i32 %b, i32* %x) {
+; CHECK-LABEL: test_exact4:
+; CHECK: shrl %
+
+ %sub = sub i32 %b, %a
+ %shr = lshr exact i32 %sub, 3
+ %gep = getelementptr inbounds i32, i32* %x, i32 %shr
+ ret i32* %gep
+}
+
+define i32* @test_exact5(i32 %a, i32 %b, i32* %x) {
+; CHECK-LABEL: test_exact5:
+; CHECK: shrl %
+
+ %sub = sub i32 %b, %a
+ %shr = lshr exact i32 %sub, 3
+ %gep = getelementptr inbounds i32, i32* %x, i32 %shr
+ ret i32* %gep
+}
+
+define i32* @test_exact6(i32 %a, i32 %b, i32* %x) {
+; CHECK-LABEL: test_exact6:
+; CHECK-NOT: shrl
+
+ %sub = sub i32 %b, %a
+ %shr = lshr exact i32 %sub, 2
+ %gep = getelementptr inbounds i32, i32* %x, i32 %shr
+ ret i32* %gep
+}