maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/CodeGen/X86/fast-isel-cmp-branch3.ll

471 lines
8.8 KiB
LLVM
Raw Normal View History

[FastISel][X86] Optimize predicates and fold CMP instructions. This optimizes predicates for certain compares, such as fcmp oeq %x, %x to fcmp ord %x, %x. The latter one is more efficient to generate. The same optimization is applied to conditional branches. llvm-svn: 211126
2014-06-18 05:55:43 +08:00
; RUN: llc < %s -fast-isel -fast-isel-abort -mtriple=x86_64-apple-darwin10 | FileCheck %s
define i32 @fcmp_oeq1(float %x) {
; CHECK-LABEL: fcmp_oeq1
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jp {{LBB.+_1}}
%1 = fcmp oeq float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_oeq2(float %x) {
; CHECK-LABEL: fcmp_oeq2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm1, %xmm0
; CHECK-NEXT: jne {{LBB.+_1}}
; CHECK-NEXT: jnp {{LBB.+_2}}
%1 = fcmp oeq float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ogt1(float %x) {
; CHECK-LABEL: fcmp_ogt1
; CHECK-NOT: ucomiss
; CHECK: movl $1, %eax
%1 = fcmp ogt float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ogt2(float %x) {
; CHECK-LABEL: fcmp_ogt2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm1, %xmm0
; CHECK-NEXT: jbe {{LBB.+_1}}
%1 = fcmp ogt float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_oge1(float %x) {
; CHECK-LABEL: fcmp_oge1
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jp {{LBB.+_1}}
%1 = fcmp oge float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_oge2(float %x) {
; CHECK-LABEL: fcmp_oge2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm1, %xmm0
; CHECK-NEXT: jb {{LBB.+_1}}
%1 = fcmp oge float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_olt1(float %x) {
; CHECK-LABEL: fcmp_olt1
; CHECK-NOT: ucomiss
; CHECK: movl $1, %eax
%1 = fcmp olt float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_olt2(float %x) {
; CHECK-LABEL: fcmp_olt2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm0, %xmm1
; CHECK-NEXT: jbe {{LBB.+_1}}
%1 = fcmp olt float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ole1(float %x) {
; CHECK-LABEL: fcmp_ole1
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jp {{LBB.+_1}}
%1 = fcmp ole float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ole2(float %x) {
; CHECK-LABEL: fcmp_ole2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm0, %xmm1
; CHECK-NEXT: jb {{LBB.+_1}}
%1 = fcmp ole float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_one1(float %x) {
; CHECK-LABEL: fcmp_one1
; CHECK-NOT: ucomiss
; CHECK: movl $1, %eax
%1 = fcmp one float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_one2(float %x) {
; CHECK-LABEL: fcmp_one2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm1, %xmm0
; CHECK-NEXT: je {{LBB.+_1}}
%1 = fcmp one float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ord1(float %x) {
; CHECK-LABEL: fcmp_ord1
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jp {{LBB.+_1}}
%1 = fcmp ord float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ord2(float %x) {
; CHECK-LABEL: fcmp_ord2
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jp {{LBB.+_1}}
%1 = fcmp ord float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_uno1(float %x) {
; CHECK-LABEL: fcmp_uno1
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jp {{LBB.+_2}}
%1 = fcmp uno float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_uno2(float %x) {
; CHECK-LABEL: fcmp_uno2
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jp {{LBB.+_2}}
%1 = fcmp uno float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ueq1(float %x) {
; CHECK-LABEL: fcmp_ueq1
; CHECK-NOT: ucomiss
%1 = fcmp ueq float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ueq2(float %x) {
; CHECK-LABEL: fcmp_ueq2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm1, %xmm0
; CHECK-NEXT: je {{LBB.+_2}}
%1 = fcmp ueq float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ugt1(float %x) {
; CHECK-LABEL: fcmp_ugt1
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jnp {{LBB.+_1}}
%1 = fcmp ugt float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ugt2(float %x) {
; CHECK-LABEL: fcmp_ugt2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm0, %xmm1
; CHECK-NEXT: jae {{LBB.+_1}}
%1 = fcmp ugt float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_uge1(float %x) {
; CHECK-LABEL: fcmp_uge1
; CHECK-NOT: ucomiss
%1 = fcmp uge float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_uge2(float %x) {
; CHECK-LABEL: fcmp_uge2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm0, %xmm1
; CHECK-NEXT: ja {{LBB.+_1}}
%1 = fcmp uge float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ult1(float %x) {
; CHECK-LABEL: fcmp_ult1
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jnp {{LBB.+_1}}
%1 = fcmp ult float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ult2(float %x) {
; CHECK-LABEL: fcmp_ult2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm1, %xmm0
; CHECK-NEXT: jae {{LBB.+_1}}
%1 = fcmp ult float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ule1(float %x) {
; CHECK-LABEL: fcmp_ule1
; CHECK-NOT: ucomiss
%1 = fcmp ule float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_ule2(float %x) {
; CHECK-LABEL: fcmp_ule2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm1, %xmm0
; CHECK-NEXT: ja {{LBB.+_1}}
%1 = fcmp ule float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_une1(float %x) {
; CHECK-LABEL: fcmp_une1
; CHECK: ucomiss %xmm0, %xmm0
; CHECK-NEXT: jnp {{LBB.+_1}}
%1 = fcmp une float %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @fcmp_une2(float %x) {
; CHECK-LABEL: fcmp_une2
; CHECK: xorps %xmm1, %xmm1
; CHECK-NEXT: ucomiss %xmm1, %xmm0
; CHECK-NEXT: jne {{LBB.+_2}}
; CHECK-NEXT: jp {{LBB.+_2}}
; CHECK-NEXT: jmp {{LBB.+_1}}
%1 = fcmp une float %x, 0.000000e+00
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_eq(i32 %x) {
; CHECK-LABEL: icmp_eq
; CHECK-NOT: cmpl
Reapply [FastISel][X86] Use XOR to materialize the "0" value (r215594). Note: This was originally reverted to track down a buildbot error. Reapply without any modifications. llvm-svn: 216011
2014-08-20 03:44:10 +08:00
; CHECK: xorl %eax, %eax
[FastISel][X86] Optimize predicates and fold CMP instructions. This optimizes predicates for certain compares, such as fcmp oeq %x, %x to fcmp ord %x, %x. The latter one is more efficient to generate. The same optimization is applied to conditional branches. llvm-svn: 211126
2014-06-18 05:55:43 +08:00
%1 = icmp eq i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_ne(i32 %x) {
; CHECK-LABEL: icmp_ne
; CHECK-NOT: cmpl
; CHECK: movl $1, %eax
%1 = icmp ne i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_ugt(i32 %x) {
; CHECK-LABEL: icmp_ugt
; CHECK-NOT: cmpl
; CHECK: movl $1, %eax
%1 = icmp ugt i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_uge(i32 %x) {
; CHECK-LABEL: icmp_uge
; CHECK-NOT: cmpl
Reapply [FastISel][X86] Use XOR to materialize the "0" value (r215594). Note: This was originally reverted to track down a buildbot error. Reapply without any modifications. llvm-svn: 216011
2014-08-20 03:44:10 +08:00
; CHECK: xorl %eax, %eax
[FastISel][X86] Optimize predicates and fold CMP instructions. This optimizes predicates for certain compares, such as fcmp oeq %x, %x to fcmp ord %x, %x. The latter one is more efficient to generate. The same optimization is applied to conditional branches. llvm-svn: 211126
2014-06-18 05:55:43 +08:00
%1 = icmp uge i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_ult(i32 %x) {
; CHECK-LABEL: icmp_ult
; CHECK-NOT: cmpl
; CHECK: movl $1, %eax
%1 = icmp ult i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_ule(i32 %x) {
; CHECK-LABEL: icmp_ule
; CHECK-NOT: cmpl
Reapply [FastISel][X86] Use XOR to materialize the "0" value (r215594). Note: This was originally reverted to track down a buildbot error. Reapply without any modifications. llvm-svn: 216011
2014-08-20 03:44:10 +08:00
; CHECK: xorl %eax, %eax
[FastISel][X86] Optimize predicates and fold CMP instructions. This optimizes predicates for certain compares, such as fcmp oeq %x, %x to fcmp ord %x, %x. The latter one is more efficient to generate. The same optimization is applied to conditional branches. llvm-svn: 211126
2014-06-18 05:55:43 +08:00
%1 = icmp ule i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_sgt(i32 %x) {
; CHECK-LABEL: icmp_sgt
; CHECK-NOT: cmpl
; CHECK: movl $1, %eax
%1 = icmp sgt i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_sge(i32 %x) {
; CHECK-LABEL: icmp_sge
; CHECK-NOT: cmpl
Reapply [FastISel][X86] Use XOR to materialize the "0" value (r215594). Note: This was originally reverted to track down a buildbot error. Reapply without any modifications. llvm-svn: 216011
2014-08-20 03:44:10 +08:00
; CHECK: xorl %eax, %eax
[FastISel][X86] Optimize predicates and fold CMP instructions. This optimizes predicates for certain compares, such as fcmp oeq %x, %x to fcmp ord %x, %x. The latter one is more efficient to generate. The same optimization is applied to conditional branches. llvm-svn: 211126
2014-06-18 05:55:43 +08:00
%1 = icmp sge i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_slt(i32 %x) {
; CHECK-LABEL: icmp_slt
; CHECK-NOT: cmpl
; CHECK: movl $1, %eax
%1 = icmp slt i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}
define i32 @icmp_sle(i32 %x) {
; CHECK-LABEL: icmp_sle
; CHECK-NOT: cmpl
Reapply [FastISel][X86] Use XOR to materialize the "0" value (r215594). Note: This was originally reverted to track down a buildbot error. Reapply without any modifications. llvm-svn: 216011
2014-08-20 03:44:10 +08:00
; CHECK: xorl %eax, %eax
[FastISel][X86] Optimize predicates and fold CMP instructions. This optimizes predicates for certain compares, such as fcmp oeq %x, %x to fcmp ord %x, %x. The latter one is more efficient to generate. The same optimization is applied to conditional branches. llvm-svn: 211126
2014-06-18 05:55:43 +08:00
%1 = icmp sle i32 %x, %x
br i1 %1, label %bb1, label %bb2
bb2:
ret i32 1
bb1:
ret i32 0
}