declare <8 x float> @llvm.fabs.v8f32(<8 x float> %p)
; PR20354: when generating code for a vector fabs op,
-; make sure the correct mask is used for all vector elements.
-; CHECK-LABEL: .LCPI4_0:
-; CHECK-NEXT: .long 2147483647
-; CHECK-NEXT: .long 2147483647
-define i64 @fabs_v2f32(<2 x float> %v) {
-; CHECK-LABEL: fabs_v2f32:
-; CHECK: movabsq $-9223372034707292160, %[[R:r[^ ]+]]
-; CHECK-NEXT: vmovq %[[R]], %[[X:xmm[0-9]+]]
-; CHECK-NEXT: vandps {{.*}}.LCPI4_0{{.*}}, %[[X]], %[[X]]
-; CHECK-NEXT: vmovq %[[X]], %rax
-; CHECK-NEXT: retq
- %highbits = bitcast i64 9223372039002259456 to <2 x float> ; 0x8000_0000_8000_0000
- %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %highbits)
- %ret = bitcast <2 x float> %fabs to i64
- ret i64 %ret
+; make sure that we're only turning off the sign bit of each float value.
+; No constant pool loads or vector ops are needed for the fabs of a
+; bitcasted integer constant; we should just return an integer constant
+; that has the sign bits turned off.
+;
+; So instead of something like this:
+; movabsq (constant pool load of mask for sign bits)
+; vmovq (move from integer register to vector/fp register)
+; vandps (mask off sign bits)
+; vmovq (move vector/fp register back to integer return register)
+;
+; We should generate:
+; mov (put constant value in return register)
+
+define i64 @fabs_v2f32_1() {
+; CHECK-LABEL: fabs_v2f32_1:
+; CHECK: movabsq $9223372032559808512, %rax # imm = 0x7FFFFFFF00000000
+; CHECK-NEXT: retq
+ %bitcast = bitcast i64 18446744069414584320 to <2 x float> ; 0xFFFF_FFFF_0000_0000
+ %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %bitcast)
+ %ret = bitcast <2 x float> %fabs to i64
+ ret i64 %ret
+}
+
+define i64 @fabs_v2f32_2() {
+; CHECK-LABEL: fabs_v2f32_2:
+; CHECK: movl $2147483647, %eax # imm = 0x7FFFFFFF
+; CHECK-NEXT: retq
+ %bitcast = bitcast i64 4294967295 to <2 x float> ; 0x0000_0000_FFFF_FFFF
+ %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %bitcast)
+ %ret = bitcast <2 x float> %fabs to i64
+ ret i64 %ret
}
declare <2 x float> @llvm.fabs.v2f32(<2 x float> %p)