%tmp1 = and i32 %tmp0, 16382
ret i32 %tmp1
}
+
+; i64
+
+; The most canonical variant
+define i64 @c0_i64(i64 %arg) {
+; CHECK-LABEL: c0_i64:
+; CHECK: // %bb.0:
+; CHECK-NEXT: ubfx x0, x0, #51, #10
+; CHECK-NEXT: ret
+ %tmp0 = lshr i64 %arg, 51
+ %tmp1 = and i64 %tmp0, 1023
+ ret i64 %tmp1
+}
+
+; Should be still fine, but the mask is shifted
+define i64 @c1_i64(i64 %arg) {
+; CHECK-LABEL: c1_i64:
+; CHECK: // %bb.0:
+; CHECK-NEXT: lsr x8, x0, #51
+; CHECK-NEXT: and x0, x8, #0xffc
+; CHECK-NEXT: ret
+ %tmp0 = lshr i64 %arg, 51
+ %tmp1 = and i64 %tmp0, 4092
+ ret i64 %tmp1
+}
+
+; Should be still fine, but the result is shifted left afterwards
+define i64 @c2_i64(i64 %arg) {
+; CHECK-LABEL: c2_i64:
+; CHECK: // %bb.0:
+; CHECK-NEXT: ubfx x8, x0, #51, #10
+; CHECK-NEXT: lsl x0, x8, #2
+; CHECK-NEXT: ret
+ %tmp0 = lshr i64 %arg, 51
+ %tmp1 = and i64 %tmp0, 1023
+ %tmp2 = shl i64 %tmp1, 2
+ ret i64 %tmp2
+}
+
+; The mask covers newly shifted-in bit
+define i64 @c4_i64_bad(i64 %arg) {
+; CHECK-LABEL: c4_i64_bad:
+; CHECK: // %bb.0:
+; CHECK-NEXT: lsr x8, x0, #51
+; CHECK-NEXT: and x0, x8, #0x1ffe
+; CHECK-NEXT: ret
+ %tmp0 = lshr i64 %arg, 51
+ %tmp1 = and i64 %tmp0, 16382
+ ret i64 %tmp1
+}
%tmp1 = and i32 %tmp0, 16382
ret i32 %tmp1
}
+
+; i64
+
+; The most canonical variant
+define i64 @c0_i64(i64 %arg) {
+; X86-NOBMI-LABEL: c0_i64:
+; X86-NOBMI: # %bb.0:
+; X86-NOBMI-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NOBMI-NEXT: shrl $19, %eax
+; X86-NOBMI-NEXT: andl $1023, %eax # imm = 0x3FF
+; X86-NOBMI-NEXT: xorl %edx, %edx
+; X86-NOBMI-NEXT: retl
+;
+; X86-BMI1NOTBM-LABEL: c0_i64:
+; X86-BMI1NOTBM: # %bb.0:
+; X86-BMI1NOTBM-NEXT: movl $2579, %eax # imm = 0xA13
+; X86-BMI1NOTBM-NEXT: bextrl %eax, {{[0-9]+}}(%esp), %eax
+; X86-BMI1NOTBM-NEXT: xorl %edx, %edx
+; X86-BMI1NOTBM-NEXT: retl
+;
+; X86-BMI1TBM-LABEL: c0_i64:
+; X86-BMI1TBM: # %bb.0:
+; X86-BMI1TBM-NEXT: bextrl $2579, {{[0-9]+}}(%esp), %eax # imm = 0xA13
+; X86-BMI1TBM-NEXT: xorl %edx, %edx
+; X86-BMI1TBM-NEXT: retl
+;
+; X86-BMI1NOTBMBMI2-LABEL: c0_i64:
+; X86-BMI1NOTBMBMI2: # %bb.0:
+; X86-BMI1NOTBMBMI2-NEXT: movl $2579, %eax # imm = 0xA13
+; X86-BMI1NOTBMBMI2-NEXT: bextrl %eax, {{[0-9]+}}(%esp), %eax
+; X86-BMI1NOTBMBMI2-NEXT: xorl %edx, %edx
+; X86-BMI1NOTBMBMI2-NEXT: retl
+;
+; X64-NOBMI-LABEL: c0_i64:
+; X64-NOBMI: # %bb.0:
+; X64-NOBMI-NEXT: movq %rdi, %rax
+; X64-NOBMI-NEXT: shrq $51, %rax
+; X64-NOBMI-NEXT: andl $1023, %eax # imm = 0x3FF
+; X64-NOBMI-NEXT: retq
+;
+; X64-BMI1NOTBM-LABEL: c0_i64:
+; X64-BMI1NOTBM: # %bb.0:
+; X64-BMI1NOTBM-NEXT: movl $2611, %eax # imm = 0xA33
+; X64-BMI1NOTBM-NEXT: bextrq %rax, %rdi, %rax
+; X64-BMI1NOTBM-NEXT: retq
+;
+; X64-BMI1TBM-LABEL: c0_i64:
+; X64-BMI1TBM: # %bb.0:
+; X64-BMI1TBM-NEXT: bextrq $2611, %rdi, %rax # imm = 0xA33
+; X64-BMI1TBM-NEXT: retq
+;
+; X64-BMI1NOTBMBMI2-LABEL: c0_i64:
+; X64-BMI1NOTBMBMI2: # %bb.0:
+; X64-BMI1NOTBMBMI2-NEXT: movl $2611, %eax # imm = 0xA33
+; X64-BMI1NOTBMBMI2-NEXT: bextrq %rax, %rdi, %rax
+; X64-BMI1NOTBMBMI2-NEXT: retq
+ %tmp0 = lshr i64 %arg, 51
+ %tmp1 = and i64 %tmp0, 1023
+ ret i64 %tmp1
+}
+
+; Should be still fine, but the mask is shifted
+define i64 @c1_i64(i64 %arg) {
+; X86-LABEL: c1_i64:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: shrl $19, %eax
+; X86-NEXT: andl $4092, %eax # imm = 0xFFC
+; X86-NEXT: xorl %edx, %edx
+; X86-NEXT: retl
+;
+; X64-LABEL: c1_i64:
+; X64: # %bb.0:
+; X64-NEXT: movq %rdi, %rax
+; X64-NEXT: shrq $51, %rax
+; X64-NEXT: andl $4092, %eax # imm = 0xFFC
+; X64-NEXT: retq
+ %tmp0 = lshr i64 %arg, 51
+ %tmp1 = and i64 %tmp0, 4092
+ ret i64 %tmp1
+}
+
+; Should be still fine, but the result is shifted left afterwards
+define i64 @c2_i64(i64 %arg) {
+; X86-LABEL: c2_i64:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: shrl $17, %eax
+; X86-NEXT: andl $4092, %eax # imm = 0xFFC
+; X86-NEXT: xorl %edx, %edx
+; X86-NEXT: retl
+;
+; X64-LABEL: c2_i64:
+; X64: # %bb.0:
+; X64-NEXT: movq %rdi, %rax
+; X64-NEXT: shrq $49, %rax
+; X64-NEXT: andl $4092, %eax # imm = 0xFFC
+; X64-NEXT: retq
+ %tmp0 = lshr i64 %arg, 51
+ %tmp1 = and i64 %tmp0, 1023
+ %tmp2 = shl i64 %tmp1, 2
+ ret i64 %tmp2
+}
+
+; The mask covers newly shifted-in bit
+define i64 @c4_i64_bad(i64 %arg) {
+; X86-LABEL: c4_i64_bad:
+; X86: # %bb.0:
+; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X86-NEXT: shrl $19, %eax
+; X86-NEXT: andl $-2, %eax
+; X86-NEXT: xorl %edx, %edx
+; X86-NEXT: retl
+;
+; X64-LABEL: c4_i64_bad:
+; X64: # %bb.0:
+; X64-NEXT: movq %rdi, %rax
+; X64-NEXT: shrq $51, %rax
+; X64-NEXT: andl $-2, %eax
+; X64-NEXT: retq
+ %tmp0 = lshr i64 %arg, 51
+ %tmp1 = and i64 %tmp0, 16382
+ ret i64 %tmp1
+}