2017-03-04 04:48:54 +08:00
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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define i32 @test1(i32 %a, i32 %b) nounwind readnone {
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2017-03-04 04:48:54 +08:00
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; CHECK-LABEL: test1:
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; CHECK: # BB#0:
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; CHECK-NEXT: cmpl $1, %edi
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; CHECK-NEXT: sbbl $-1, %esi
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: retq
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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%not.cmp = icmp ne i32 %a, 0
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%inc = zext i1 %not.cmp to i32
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%retval.0 = add i32 %inc, %b
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ret i32 %retval.0
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}
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2017-03-04 08:06:37 +08:00
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define i32 @test1_commute(i32 %a, i32 %b) nounwind readnone {
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; CHECK-LABEL: test1_commute:
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; CHECK: # BB#0:
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2017-03-04 08:18:31 +08:00
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; CHECK-NEXT: cmpl $1, %edi
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; CHECK-NEXT: sbbl $-1, %esi
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; CHECK-NEXT: movl %esi, %eax
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2017-03-04 08:06:37 +08:00
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; CHECK-NEXT: retq
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%cmp = icmp ne i32 %a, 0
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%inc = zext i1 %cmp to i32
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%ret = add i32 %b, %inc
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ret i32 %ret
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}
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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define i32 @test2(i32 %a, i32 %b) nounwind readnone {
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2017-03-04 04:48:54 +08:00
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; CHECK-LABEL: test2:
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; CHECK: # BB#0:
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; CHECK-NEXT: cmpl $1, %edi
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; CHECK-NEXT: adcl $0, %esi
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: retq
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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%cmp = icmp eq i32 %a, 0
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%inc = zext i1 %cmp to i32
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%retval.0 = add i32 %inc, %b
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ret i32 %retval.0
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}
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define i32 @test3(i32 %a, i32 %b) nounwind readnone {
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2017-03-04 04:48:54 +08:00
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; CHECK-LABEL: test3:
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; CHECK: # BB#0:
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; CHECK-NEXT: cmpl $1, %edi
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; CHECK-NEXT: adcl $0, %esi
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: retq
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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%cmp = icmp eq i32 %a, 0
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%inc = zext i1 %cmp to i32
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%retval.0 = add i32 %inc, %b
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ret i32 %retval.0
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}
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define i32 @test4(i32 %a, i32 %b) nounwind readnone {
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2017-03-04 04:48:54 +08:00
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; CHECK-LABEL: test4:
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; CHECK: # BB#0:
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; CHECK-NEXT: cmpl $1, %edi
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; CHECK-NEXT: sbbl $-1, %esi
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: retq
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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%not.cmp = icmp ne i32 %a, 0
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%inc = zext i1 %not.cmp to i32
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%retval.0 = add i32 %inc, %b
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ret i32 %retval.0
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}
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define i32 @test5(i32 %a, i32 %b) nounwind readnone {
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2017-03-04 04:48:54 +08:00
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; CHECK-LABEL: test5:
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; CHECK: # BB#0:
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; CHECK-NEXT: cmpl $1, %edi
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; CHECK-NEXT: adcl $-1, %esi
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: retq
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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%not.cmp = icmp ne i32 %a, 0
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%inc = zext i1 %not.cmp to i32
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%retval.0 = sub i32 %b, %inc
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ret i32 %retval.0
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}
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define i32 @test6(i32 %a, i32 %b) nounwind readnone {
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2017-03-04 04:48:54 +08:00
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; CHECK-LABEL: test6:
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; CHECK: # BB#0:
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; CHECK-NEXT: cmpl $1, %edi
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; CHECK-NEXT: sbbl $0, %esi
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: retq
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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%cmp = icmp eq i32 %a, 0
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%inc = zext i1 %cmp to i32
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%retval.0 = sub i32 %b, %inc
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ret i32 %retval.0
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}
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define i32 @test7(i32 %a, i32 %b) nounwind readnone {
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2017-03-04 04:48:54 +08:00
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; CHECK-LABEL: test7:
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; CHECK: # BB#0:
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; CHECK-NEXT: cmpl $1, %edi
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; CHECK-NEXT: sbbl $0, %esi
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: retq
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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%cmp = icmp eq i32 %a, 0
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%inc = zext i1 %cmp to i32
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%retval.0 = sub i32 %b, %inc
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ret i32 %retval.0
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}
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define i32 @test8(i32 %a, i32 %b) nounwind readnone {
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2017-03-04 04:48:54 +08:00
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; CHECK-LABEL: test8:
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; CHECK: # BB#0:
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; CHECK-NEXT: cmpl $1, %edi
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; CHECK-NEXT: adcl $-1, %esi
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: retq
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Add some x86 specific dagcombines for conditional increments.
(add Y, (sete X, 0)) -> cmp X, 1; adc 0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete X, 0), Y) -> cmp X, 1; sbb 0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y
for
unsigned foo(unsigned a, unsigned b) {
if (a == 0) b++;
return b;
}
we now get:
foo:
cmpl $1, %edi
movl %esi, %eax
adcl $0, %eax
ret
instead of:
foo:
testl %edi, %edi
sete %al
movzbl %al, %eax
addl %esi, %eax
ret
llvm-svn: 122364
2010-12-22 05:41:44 +08:00
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%not.cmp = icmp ne i32 %a, 0
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%inc = zext i1 %not.cmp to i32
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%retval.0 = sub i32 %b, %inc
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ret i32 %retval.0
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}
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