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-rw-r--r--test/CodeGen/X86/known-bits.ll170
1 files changed, 170 insertions, 0 deletions
diff --git a/test/CodeGen/X86/known-bits.ll b/test/CodeGen/X86/known-bits.ll
index 46451f21d8d6f..81a60cdee3acb 100644
--- a/test/CodeGen/X86/known-bits.ll
+++ b/test/CodeGen/X86/known-bits.ll
@@ -103,3 +103,173 @@ CF246: ; preds = %CF237
%E156 = extractelement <4 x i1> %Cmp117, i32 2
br label %CF
}
+
+define i32 @knownbits_mask_add_lshr(i32 %a0, i32 %a1) nounwind {
+; X32-LABEL: knownbits_mask_add_lshr:
+; X32: # BB#0:
+; X32-NEXT: xorl %eax, %eax
+; X32-NEXT: retl
+;
+; X64-LABEL: knownbits_mask_add_lshr:
+; X64: # BB#0:
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: retq
+ %1 = and i32 %a0, 32767
+ %2 = and i32 %a1, 32766
+ %3 = add i32 %1, %2
+ %4 = lshr i32 %3, 17
+ ret i32 %4
+}
+
+define i128 @knownbits_mask_addc_shl(i64 %a0, i64 %a1, i64 %a2) nounwind {
+; X32-LABEL: knownbits_mask_addc_shl:
+; X32: # BB#0:
+; X32-NEXT: pushl %edi
+; X32-NEXT: pushl %esi
+; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X32-NEXT: movl {{[0-9]+}}(%esp), %edx
+; X32-NEXT: movl $-1024, %esi # imm = 0xFC00
+; X32-NEXT: movl {{[0-9]+}}(%esp), %edi
+; X32-NEXT: andl %esi, %edi
+; X32-NEXT: andl {{[0-9]+}}(%esp), %esi
+; X32-NEXT: addl %edi, %esi
+; X32-NEXT: adcl {{[0-9]+}}(%esp), %edx
+; X32-NEXT: adcl $0, %ecx
+; X32-NEXT: shldl $22, %edx, %ecx
+; X32-NEXT: shldl $22, %esi, %edx
+; X32-NEXT: movl %edx, 8(%eax)
+; X32-NEXT: movl %ecx, 12(%eax)
+; X32-NEXT: movl $0, 4(%eax)
+; X32-NEXT: movl $0, (%eax)
+; X32-NEXT: popl %esi
+; X32-NEXT: popl %edi
+; X32-NEXT: retl $4
+;
+; X64-LABEL: knownbits_mask_addc_shl:
+; X64: # BB#0:
+; X64-NEXT: andq $-1024, %rdi # imm = 0xFC00
+; X64-NEXT: andq $-1024, %rsi # imm = 0xFC00
+; X64-NEXT: addq %rdi, %rsi
+; X64-NEXT: adcl $0, %edx
+; X64-NEXT: shldq $54, %rsi, %rdx
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: retq
+ %1 = and i64 %a0, -1024
+ %2 = zext i64 %1 to i128
+ %3 = and i64 %a1, -1024
+ %4 = zext i64 %3 to i128
+ %5 = add i128 %2, %4
+ %6 = zext i64 %a2 to i128
+ %7 = shl i128 %6, 64
+ %8 = add i128 %5, %7
+ %9 = shl i128 %8, 54
+ ret i128 %9
+}
+
+define {i32, i1} @knownbits_uaddo_saddo(i64 %a0, i64 %a1) nounwind {
+; X32-LABEL: knownbits_uaddo_saddo:
+; X32: # BB#0:
+; X32-NEXT: pushl %ebx
+; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X32-NEXT: leal (%ecx,%eax), %edx
+; X32-NEXT: cmpl %ecx, %edx
+; X32-NEXT: setb %bl
+; X32-NEXT: testl %eax, %eax
+; X32-NEXT: setns %al
+; X32-NEXT: testl %ecx, %ecx
+; X32-NEXT: setns %cl
+; X32-NEXT: cmpb %al, %cl
+; X32-NEXT: sete %al
+; X32-NEXT: testl %edx, %edx
+; X32-NEXT: setns %dl
+; X32-NEXT: cmpb %dl, %cl
+; X32-NEXT: setne %dl
+; X32-NEXT: andb %al, %dl
+; X32-NEXT: orb %bl, %dl
+; X32-NEXT: xorl %eax, %eax
+; X32-NEXT: popl %ebx
+; X32-NEXT: retl
+;
+; X64-LABEL: knownbits_uaddo_saddo:
+; X64: # BB#0:
+; X64-NEXT: shlq $32, %rdi
+; X64-NEXT: shlq $32, %rsi
+; X64-NEXT: addq %rdi, %rsi
+; X64-NEXT: setb %al
+; X64-NEXT: seto %dl
+; X64-NEXT: orb %al, %dl
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: retq
+ %1 = shl i64 %a0, 32
+ %2 = shl i64 %a1, 32
+ %u = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %1, i64 %2)
+ %uval = extractvalue {i64, i1} %u, 0
+ %uovf = extractvalue {i64, i1} %u, 1
+ %s = call {i64, i1} @llvm.sadd.with.overflow.i64(i64 %1, i64 %2)
+ %sval = extractvalue {i64, i1} %s, 0
+ %sovf = extractvalue {i64, i1} %s, 1
+ %sum = add i64 %uval, %sval
+ %3 = trunc i64 %sum to i32
+ %4 = or i1 %uovf, %sovf
+ %ret0 = insertvalue {i32, i1} undef, i32 %3, 0
+ %ret1 = insertvalue {i32, i1} %ret0, i1 %4, 1
+ ret {i32, i1} %ret1
+}
+
+define {i32, i1} @knownbits_usubo_ssubo(i64 %a0, i64 %a1) nounwind {
+; X32-LABEL: knownbits_usubo_ssubo:
+; X32: # BB#0:
+; X32-NEXT: pushl %ebx
+; X32-NEXT: movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT: movl {{[0-9]+}}(%esp), %ecx
+; X32-NEXT: movl %ecx, %edx
+; X32-NEXT: subl %eax, %edx
+; X32-NEXT: setns %bl
+; X32-NEXT: cmpl %edx, %ecx
+; X32-NEXT: setb %dh
+; X32-NEXT: testl %ecx, %ecx
+; X32-NEXT: setns %cl
+; X32-NEXT: cmpb %bl, %cl
+; X32-NEXT: setne %ch
+; X32-NEXT: testl %eax, %eax
+; X32-NEXT: setns %al
+; X32-NEXT: cmpb %al, %cl
+; X32-NEXT: setne %dl
+; X32-NEXT: andb %ch, %dl
+; X32-NEXT: orb %dh, %dl
+; X32-NEXT: xorl %eax, %eax
+; X32-NEXT: popl %ebx
+; X32-NEXT: retl
+;
+; X64-LABEL: knownbits_usubo_ssubo:
+; X64: # BB#0:
+; X64-NEXT: shlq $32, %rdi
+; X64-NEXT: shlq $32, %rsi
+; X64-NEXT: cmpq %rsi, %rdi
+; X64-NEXT: setb %al
+; X64-NEXT: seto %dl
+; X64-NEXT: orb %al, %dl
+; X64-NEXT: xorl %eax, %eax
+; X64-NEXT: retq
+ %1 = shl i64 %a0, 32
+ %2 = shl i64 %a1, 32
+ %u = call {i64, i1} @llvm.usub.with.overflow.i64(i64 %1, i64 %2)
+ %uval = extractvalue {i64, i1} %u, 0
+ %uovf = extractvalue {i64, i1} %u, 1
+ %s = call {i64, i1} @llvm.ssub.with.overflow.i64(i64 %1, i64 %2)
+ %sval = extractvalue {i64, i1} %s, 0
+ %sovf = extractvalue {i64, i1} %s, 1
+ %sum = add i64 %uval, %sval
+ %3 = trunc i64 %sum to i32
+ %4 = or i1 %uovf, %sovf
+ %ret0 = insertvalue {i32, i1} undef, i32 %3, 0
+ %ret1 = insertvalue {i32, i1} %ret0, i1 %4, 1
+ ret {i32, i1} %ret1
+}
+
+declare {i64, i1} @llvm.uadd.with.overflow.i64(i64, i64) nounwind readnone
+declare {i64, i1} @llvm.sadd.with.overflow.i64(i64, i64) nounwind readnone
+declare {i64, i1} @llvm.usub.with.overflow.i64(i64, i64) nounwind readnone
+declare {i64, i1} @llvm.ssub.with.overflow.i64(i64, i64) nounwind readnone
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