; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=x86_64-- -mattr=-macrofusion,-branchfusion -post-RA-scheduler=0 | FileCheck %s --check-prefix=NOFUSION_NOPOSTRA ; RUN: llc < %s -mtriple=x86_64-- -mattr=-macrofusion,+branchfusion -post-RA-scheduler=0 | FileCheck %s --check-prefix=BRANCHFUSION_NOPOSTRA --check-prefix=BRANCHFUSIONONLY_NOPOSTRA ; RUN: llc < %s -mtriple=x86_64-- -mattr=+macrofusion,-branchfusion -post-RA-scheduler=0 | FileCheck %s --check-prefix=BRANCHFUSION_NOPOSTRA --check-prefix=MACROFUSION_NOPOSTRA ; RUN: llc < %s -mtriple=x86_64-- -mattr=-macrofusion,-branchfusion -post-RA-scheduler=1 | FileCheck %s --check-prefix=NOFUSION_POSTRA ; RUN: llc < %s -mtriple=x86_64-- -mattr=-macrofusion,+branchfusion -post-RA-scheduler=1 | FileCheck %s --check-prefix=BRANCHFUSION_POSTRA --check-prefix=BRANCHFUSIONONLY_POSTRA ; RUN: llc < %s -mtriple=x86_64-- -mattr=+macrofusion,-branchfusion -post-RA-scheduler=1 | FileCheck %s --check-prefix=BRANCHFUSION_POSTRA --check-prefix=MACROFUSION_POSTRA ; RUN: llc < %s -mtriple=x86_64-- -mattr=-macrofusion,-branchfusion -enable-misched=0 -misched-postra=1 -enable-post-misched | FileCheck %s --check-prefix=NOFUSION_MISCHEDPOSTRA ; RUN: llc < %s -mtriple=x86_64-- -mattr=-macrofusion,+branchfusion -enable-misched=0 -misched-postra=1 -enable-post-misched | FileCheck %s --check-prefix=BRANCHFUSION_MISCHEDPOSTRA --check-prefix=BRANCHFUSIONONLY_MISCHEDPOSTRA ; RUN: llc < %s -mtriple=x86_64-- -mattr=+macrofusion,-branchfusion -enable-misched=0 -misched-postra=1 -enable-post-misched | FileCheck %s --check-prefix=BRANCHFUSION_MISCHEDPOSTRA --check-prefix=MACROFUSION_MISCHEDPOSTRA ; testb should be scheduled right before je to enable macro-fusion. define i32 @macrofuse_test_je(i32 %flags, i8* %p) nounwind { ; NOFUSION_NOPOSTRA-LABEL: macrofuse_test_je: ; NOFUSION_NOPOSTRA: # %bb.0: # %entry ; NOFUSION_NOPOSTRA-NEXT: xorl %eax, %eax ; NOFUSION_NOPOSTRA-NEXT: testl $512, %edi # imm = 0x200 ; NOFUSION_NOPOSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_NOPOSTRA-NEXT: je .LBB0_2 ; NOFUSION_NOPOSTRA-NEXT: # %bb.1: # %if.then ; NOFUSION_NOPOSTRA-NEXT: movl $1, %eax ; NOFUSION_NOPOSTRA-NEXT: .LBB0_2: # %if.end ; NOFUSION_NOPOSTRA-NEXT: retq ; ; BRANCHFUSION_NOPOSTRA-LABEL: macrofuse_test_je: ; BRANCHFUSION_NOPOSTRA: # %bb.0: # %entry ; BRANCHFUSION_NOPOSTRA-NEXT: xorl %eax, %eax ; BRANCHFUSION_NOPOSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSION_NOPOSTRA-NEXT: testl $512, %edi # imm = 0x200 ; BRANCHFUSION_NOPOSTRA-NEXT: je .LBB0_2 ; BRANCHFUSION_NOPOSTRA-NEXT: # %bb.1: # %if.then ; BRANCHFUSION_NOPOSTRA-NEXT: movl $1, %eax ; BRANCHFUSION_NOPOSTRA-NEXT: .LBB0_2: # %if.end ; BRANCHFUSION_NOPOSTRA-NEXT: retq ; ; NOFUSION_POSTRA-LABEL: macrofuse_test_je: ; NOFUSION_POSTRA: # %bb.0: # %entry ; NOFUSION_POSTRA-NEXT: xorl %eax, %eax ; NOFUSION_POSTRA-NEXT: testl $512, %edi # imm = 0x200 ; NOFUSION_POSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_POSTRA-NEXT: je .LBB0_2 ; NOFUSION_POSTRA-NEXT: # %bb.1: # %if.then ; NOFUSION_POSTRA-NEXT: movl $1, %eax ; NOFUSION_POSTRA-NEXT: .LBB0_2: # %if.end ; NOFUSION_POSTRA-NEXT: retq ; ; BRANCHFUSION_POSTRA-LABEL: macrofuse_test_je: ; BRANCHFUSION_POSTRA: # %bb.0: # %entry ; BRANCHFUSION_POSTRA-NEXT: xorl %eax, %eax ; BRANCHFUSION_POSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSION_POSTRA-NEXT: testl $512, %edi # imm = 0x200 ; BRANCHFUSION_POSTRA-NEXT: je .LBB0_2 ; BRANCHFUSION_POSTRA-NEXT: # %bb.1: # %if.then ; BRANCHFUSION_POSTRA-NEXT: movl $1, %eax ; BRANCHFUSION_POSTRA-NEXT: .LBB0_2: # %if.end ; BRANCHFUSION_POSTRA-NEXT: retq ; ; NOFUSION_MISCHEDPOSTRA-LABEL: macrofuse_test_je: ; NOFUSION_MISCHEDPOSTRA: # %bb.0: # %entry ; NOFUSION_MISCHEDPOSTRA-NEXT: xorl %eax, %eax ; NOFUSION_MISCHEDPOSTRA-NEXT: testl $512, %edi # imm = 0x200 ; NOFUSION_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_MISCHEDPOSTRA-NEXT: je .LBB0_2 ; NOFUSION_MISCHEDPOSTRA-NEXT: # %bb.1: # %if.then ; NOFUSION_MISCHEDPOSTRA-NEXT: movl $1, %eax ; NOFUSION_MISCHEDPOSTRA-NEXT: .LBB0_2: # %if.end ; NOFUSION_MISCHEDPOSTRA-NEXT: retq ; ; BRANCHFUSION_MISCHEDPOSTRA-LABEL: macrofuse_test_je: ; BRANCHFUSION_MISCHEDPOSTRA: # %bb.0: # %entry ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: xorl %eax, %eax ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: testl $512, %edi # imm = 0x200 ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: je .LBB0_2 ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: # %bb.1: # %if.then ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: movl $1, %eax ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: .LBB0_2: # %if.end ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: retq entry: %and = and i32 %flags, 512 %tobool = icmp eq i32 %and, 0 store i8 1, i8* %p br i1 %tobool, label %if.end, label %if.then if.then: br label %if.end if.end: %hasflag = phi i32 [ 1, %if.then ], [ 0, %entry ] ret i32 %hasflag } define i32 @macrofuse_cmp_je(i32 %flags, i8* %p) nounwind { ; NOFUSION_NOPOSTRA-LABEL: macrofuse_cmp_je: ; NOFUSION_NOPOSTRA: # %bb.0: # %entry ; NOFUSION_NOPOSTRA-NEXT: cmpl $512, %edi # imm = 0x200 ; NOFUSION_NOPOSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_NOPOSTRA-NEXT: je .LBB1_1 ; NOFUSION_NOPOSTRA-NEXT: # %bb.2: # %if.then ; NOFUSION_NOPOSTRA-NEXT: movl $1, %eax ; NOFUSION_NOPOSTRA-NEXT: retq ; NOFUSION_NOPOSTRA-NEXT: .LBB1_1: ; NOFUSION_NOPOSTRA-NEXT: xorl %eax, %eax ; NOFUSION_NOPOSTRA-NEXT: retq ; ; BRANCHFUSION_NOPOSTRA-LABEL: macrofuse_cmp_je: ; BRANCHFUSION_NOPOSTRA: # %bb.0: # %entry ; BRANCHFUSION_NOPOSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSION_NOPOSTRA-NEXT: cmpl $512, %edi # imm = 0x200 ; BRANCHFUSION_NOPOSTRA-NEXT: je .LBB1_1 ; BRANCHFUSION_NOPOSTRA-NEXT: # %bb.2: # %if.then ; BRANCHFUSION_NOPOSTRA-NEXT: movl $1, %eax ; BRANCHFUSION_NOPOSTRA-NEXT: retq ; BRANCHFUSION_NOPOSTRA-NEXT: .LBB1_1: ; BRANCHFUSION_NOPOSTRA-NEXT: xorl %eax, %eax ; BRANCHFUSION_NOPOSTRA-NEXT: retq ; ; NOFUSION_POSTRA-LABEL: macrofuse_cmp_je: ; NOFUSION_POSTRA: # %bb.0: # %entry ; NOFUSION_POSTRA-NEXT: cmpl $512, %edi # imm = 0x200 ; NOFUSION_POSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_POSTRA-NEXT: je .LBB1_1 ; NOFUSION_POSTRA-NEXT: # %bb.2: # %if.then ; NOFUSION_POSTRA-NEXT: movl $1, %eax ; NOFUSION_POSTRA-NEXT: retq ; NOFUSION_POSTRA-NEXT: .LBB1_1: ; NOFUSION_POSTRA-NEXT: xorl %eax, %eax ; NOFUSION_POSTRA-NEXT: retq ; ; BRANCHFUSION_POSTRA-LABEL: macrofuse_cmp_je: ; BRANCHFUSION_POSTRA: # %bb.0: # %entry ; BRANCHFUSION_POSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSION_POSTRA-NEXT: cmpl $512, %edi # imm = 0x200 ; BRANCHFUSION_POSTRA-NEXT: je .LBB1_1 ; BRANCHFUSION_POSTRA-NEXT: # %bb.2: # %if.then ; BRANCHFUSION_POSTRA-NEXT: movl $1, %eax ; BRANCHFUSION_POSTRA-NEXT: retq ; BRANCHFUSION_POSTRA-NEXT: .LBB1_1: ; BRANCHFUSION_POSTRA-NEXT: xorl %eax, %eax ; BRANCHFUSION_POSTRA-NEXT: retq ; ; NOFUSION_MISCHEDPOSTRA-LABEL: macrofuse_cmp_je: ; NOFUSION_MISCHEDPOSTRA: # %bb.0: # %entry ; NOFUSION_MISCHEDPOSTRA-NEXT: cmpl $512, %edi # imm = 0x200 ; NOFUSION_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_MISCHEDPOSTRA-NEXT: je .LBB1_1 ; NOFUSION_MISCHEDPOSTRA-NEXT: # %bb.2: # %if.then ; NOFUSION_MISCHEDPOSTRA-NEXT: movl $1, %eax ; NOFUSION_MISCHEDPOSTRA-NEXT: retq ; NOFUSION_MISCHEDPOSTRA-NEXT: .LBB1_1: ; NOFUSION_MISCHEDPOSTRA-NEXT: xorl %eax, %eax ; NOFUSION_MISCHEDPOSTRA-NEXT: retq ; ; BRANCHFUSION_MISCHEDPOSTRA-LABEL: macrofuse_cmp_je: ; BRANCHFUSION_MISCHEDPOSTRA: # %bb.0: # %entry ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: cmpl $512, %edi # imm = 0x200 ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: je .LBB1_1 ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: # %bb.2: # %if.then ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: movl $1, %eax ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: retq ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: .LBB1_1: ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: xorl %eax, %eax ; BRANCHFUSION_MISCHEDPOSTRA-NEXT: retq entry: %sub = sub i32 %flags, 512 %tobool = icmp eq i32 %sub, 0 store i8 1, i8* %p br i1 %tobool, label %if.end, label %if.then if.then: br label %if.end if.end: %hasflag = phi i32 [ 1, %if.then ], [ 0, %entry ] ret i32 %hasflag } define i32 @macrofuse_alu_je(i32 %flags, i8* %p) nounwind { ; NOFUSION_NOPOSTRA-LABEL: macrofuse_alu_je: ; NOFUSION_NOPOSTRA: # %bb.0: # %entry ; NOFUSION_NOPOSTRA-NEXT: movl %edi, %eax ; NOFUSION_NOPOSTRA-NEXT: addl $-512, %eax # imm = 0xFE00 ; NOFUSION_NOPOSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_NOPOSTRA-NEXT: je .LBB2_2 ; NOFUSION_NOPOSTRA-NEXT: # %bb.1: # %if.then ; NOFUSION_NOPOSTRA-NEXT: movl $1, %eax ; NOFUSION_NOPOSTRA-NEXT: .LBB2_2: # %if.end ; NOFUSION_NOPOSTRA-NEXT: retq ; ; BRANCHFUSIONONLY_NOPOSTRA-LABEL: macrofuse_alu_je: ; BRANCHFUSIONONLY_NOPOSTRA: # %bb.0: # %entry ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: movl %edi, %eax ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: addl $-512, %eax # imm = 0xFE00 ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: je .LBB2_2 ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: # %bb.1: # %if.then ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: movl $1, %eax ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: .LBB2_2: # %if.end ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: retq ; ; MACROFUSION_NOPOSTRA-LABEL: macrofuse_alu_je: ; MACROFUSION_NOPOSTRA: # %bb.0: # %entry ; MACROFUSION_NOPOSTRA-NEXT: movl %edi, %eax ; MACROFUSION_NOPOSTRA-NEXT: movb $1, (%rsi) ; MACROFUSION_NOPOSTRA-NEXT: addl $-512, %eax # imm = 0xFE00 ; MACROFUSION_NOPOSTRA-NEXT: je .LBB2_2 ; MACROFUSION_NOPOSTRA-NEXT: # %bb.1: # %if.then ; MACROFUSION_NOPOSTRA-NEXT: movl $1, %eax ; MACROFUSION_NOPOSTRA-NEXT: .LBB2_2: # %if.end ; MACROFUSION_NOPOSTRA-NEXT: retq ; ; NOFUSION_POSTRA-LABEL: macrofuse_alu_je: ; NOFUSION_POSTRA: # %bb.0: # %entry ; NOFUSION_POSTRA-NEXT: movl %edi, %eax ; NOFUSION_POSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_POSTRA-NEXT: addl $-512, %eax # imm = 0xFE00 ; NOFUSION_POSTRA-NEXT: je .LBB2_2 ; NOFUSION_POSTRA-NEXT: # %bb.1: # %if.then ; NOFUSION_POSTRA-NEXT: movl $1, %eax ; NOFUSION_POSTRA-NEXT: .LBB2_2: # %if.end ; NOFUSION_POSTRA-NEXT: retq ; ; BRANCHFUSION_POSTRA-LABEL: macrofuse_alu_je: ; BRANCHFUSION_POSTRA: # %bb.0: # %entry ; BRANCHFUSION_POSTRA-NEXT: movl %edi, %eax ; BRANCHFUSION_POSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSION_POSTRA-NEXT: addl $-512, %eax # imm = 0xFE00 ; BRANCHFUSION_POSTRA-NEXT: je .LBB2_2 ; BRANCHFUSION_POSTRA-NEXT: # %bb.1: # %if.then ; BRANCHFUSION_POSTRA-NEXT: movl $1, %eax ; BRANCHFUSION_POSTRA-NEXT: .LBB2_2: # %if.end ; BRANCHFUSION_POSTRA-NEXT: retq ; ; NOFUSION_MISCHEDPOSTRA-LABEL: macrofuse_alu_je: ; NOFUSION_MISCHEDPOSTRA: # %bb.0: # %entry ; NOFUSION_MISCHEDPOSTRA-NEXT: movl %edi, %eax ; NOFUSION_MISCHEDPOSTRA-NEXT: addl $-512, %eax # imm = 0xFE00 ; NOFUSION_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_MISCHEDPOSTRA-NEXT: je .LBB2_2 ; NOFUSION_MISCHEDPOSTRA-NEXT: # %bb.1: # %if.then ; NOFUSION_MISCHEDPOSTRA-NEXT: movl $1, %eax ; NOFUSION_MISCHEDPOSTRA-NEXT: .LBB2_2: # %if.end ; NOFUSION_MISCHEDPOSTRA-NEXT: retq ; ; BRANCHFUSIONONLY_MISCHEDPOSTRA-LABEL: macrofuse_alu_je: ; BRANCHFUSIONONLY_MISCHEDPOSTRA: # %bb.0: # %entry ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: movl %edi, %eax ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: addl $-512, %eax # imm = 0xFE00 ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: je .LBB2_2 ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: # %bb.1: # %if.then ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: movl $1, %eax ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: .LBB2_2: # %if.end ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: retq ; ; MACROFUSION_MISCHEDPOSTRA-LABEL: macrofuse_alu_je: ; MACROFUSION_MISCHEDPOSTRA: # %bb.0: # %entry ; MACROFUSION_MISCHEDPOSTRA-NEXT: movl %edi, %eax ; MACROFUSION_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; MACROFUSION_MISCHEDPOSTRA-NEXT: addl $-512, %eax # imm = 0xFE00 ; MACROFUSION_MISCHEDPOSTRA-NEXT: je .LBB2_2 ; MACROFUSION_MISCHEDPOSTRA-NEXT: # %bb.1: # %if.then ; MACROFUSION_MISCHEDPOSTRA-NEXT: movl $1, %eax ; MACROFUSION_MISCHEDPOSTRA-NEXT: .LBB2_2: # %if.end ; MACROFUSION_MISCHEDPOSTRA-NEXT: retq entry: %sub = sub i32 %flags, 512 %tobool = icmp eq i32 %sub, 0 store i8 1, i8* %p br i1 %tobool, label %if.end, label %if.then if.then: br label %if.end if.end: %hasflag = phi i32 [ 1, %if.then ], [ %sub, %entry ] ret i32 %hasflag } define i32 @macrofuse_dec_je(i32 %flags, i8* %p) nounwind { ; NOFUSION_NOPOSTRA-LABEL: macrofuse_dec_je: ; NOFUSION_NOPOSTRA: # %bb.0: # %entry ; NOFUSION_NOPOSTRA-NEXT: movl %edi, %eax ; NOFUSION_NOPOSTRA-NEXT: decl %eax ; NOFUSION_NOPOSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_NOPOSTRA-NEXT: je .LBB3_2 ; NOFUSION_NOPOSTRA-NEXT: # %bb.1: # %if.then ; NOFUSION_NOPOSTRA-NEXT: movl $1, %eax ; NOFUSION_NOPOSTRA-NEXT: .LBB3_2: # %if.end ; NOFUSION_NOPOSTRA-NEXT: retq ; ; BRANCHFUSIONONLY_NOPOSTRA-LABEL: macrofuse_dec_je: ; BRANCHFUSIONONLY_NOPOSTRA: # %bb.0: # %entry ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: movl %edi, %eax ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: decl %eax ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: je .LBB3_2 ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: # %bb.1: # %if.then ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: movl $1, %eax ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: .LBB3_2: # %if.end ; BRANCHFUSIONONLY_NOPOSTRA-NEXT: retq ; ; MACROFUSION_NOPOSTRA-LABEL: macrofuse_dec_je: ; MACROFUSION_NOPOSTRA: # %bb.0: # %entry ; MACROFUSION_NOPOSTRA-NEXT: movl %edi, %eax ; MACROFUSION_NOPOSTRA-NEXT: movb $1, (%rsi) ; MACROFUSION_NOPOSTRA-NEXT: decl %eax ; MACROFUSION_NOPOSTRA-NEXT: je .LBB3_2 ; MACROFUSION_NOPOSTRA-NEXT: # %bb.1: # %if.then ; MACROFUSION_NOPOSTRA-NEXT: movl $1, %eax ; MACROFUSION_NOPOSTRA-NEXT: .LBB3_2: # %if.end ; MACROFUSION_NOPOSTRA-NEXT: retq ; ; NOFUSION_POSTRA-LABEL: macrofuse_dec_je: ; NOFUSION_POSTRA: # %bb.0: # %entry ; NOFUSION_POSTRA-NEXT: movl %edi, %eax ; NOFUSION_POSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_POSTRA-NEXT: decl %eax ; NOFUSION_POSTRA-NEXT: je .LBB3_2 ; NOFUSION_POSTRA-NEXT: # %bb.1: # %if.then ; NOFUSION_POSTRA-NEXT: movl $1, %eax ; NOFUSION_POSTRA-NEXT: .LBB3_2: # %if.end ; NOFUSION_POSTRA-NEXT: retq ; ; BRANCHFUSION_POSTRA-LABEL: macrofuse_dec_je: ; BRANCHFUSION_POSTRA: # %bb.0: # %entry ; BRANCHFUSION_POSTRA-NEXT: movl %edi, %eax ; BRANCHFUSION_POSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSION_POSTRA-NEXT: decl %eax ; BRANCHFUSION_POSTRA-NEXT: je .LBB3_2 ; BRANCHFUSION_POSTRA-NEXT: # %bb.1: # %if.then ; BRANCHFUSION_POSTRA-NEXT: movl $1, %eax ; BRANCHFUSION_POSTRA-NEXT: .LBB3_2: # %if.end ; BRANCHFUSION_POSTRA-NEXT: retq ; ; NOFUSION_MISCHEDPOSTRA-LABEL: macrofuse_dec_je: ; NOFUSION_MISCHEDPOSTRA: # %bb.0: # %entry ; NOFUSION_MISCHEDPOSTRA-NEXT: movl %edi, %eax ; NOFUSION_MISCHEDPOSTRA-NEXT: decl %eax ; NOFUSION_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; NOFUSION_MISCHEDPOSTRA-NEXT: je .LBB3_2 ; NOFUSION_MISCHEDPOSTRA-NEXT: # %bb.1: # %if.then ; NOFUSION_MISCHEDPOSTRA-NEXT: movl $1, %eax ; NOFUSION_MISCHEDPOSTRA-NEXT: .LBB3_2: # %if.end ; NOFUSION_MISCHEDPOSTRA-NEXT: retq ; ; BRANCHFUSIONONLY_MISCHEDPOSTRA-LABEL: macrofuse_dec_je: ; BRANCHFUSIONONLY_MISCHEDPOSTRA: # %bb.0: # %entry ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: movl %edi, %eax ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: decl %eax ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: je .LBB3_2 ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: # %bb.1: # %if.then ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: movl $1, %eax ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: .LBB3_2: # %if.end ; BRANCHFUSIONONLY_MISCHEDPOSTRA-NEXT: retq ; ; MACROFUSION_MISCHEDPOSTRA-LABEL: macrofuse_dec_je: ; MACROFUSION_MISCHEDPOSTRA: # %bb.0: # %entry ; MACROFUSION_MISCHEDPOSTRA-NEXT: movl %edi, %eax ; MACROFUSION_MISCHEDPOSTRA-NEXT: movb $1, (%rsi) ; MACROFUSION_MISCHEDPOSTRA-NEXT: decl %eax ; MACROFUSION_MISCHEDPOSTRA-NEXT: je .LBB3_2 ; MACROFUSION_MISCHEDPOSTRA-NEXT: # %bb.1: # %if.then ; MACROFUSION_MISCHEDPOSTRA-NEXT: movl $1, %eax ; MACROFUSION_MISCHEDPOSTRA-NEXT: .LBB3_2: # %if.end ; MACROFUSION_MISCHEDPOSTRA-NEXT: retq entry: %sub = sub i32 %flags, 1 %tobool = icmp eq i32 %sub, 0 store i8 1, i8* %p br i1 %tobool, label %if.end, label %if.then if.then: br label %if.end if.end: %hasflag = phi i32 [ 1, %if.then ], [ %sub, %entry ] ret i32 %hasflag }