; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=i386-unknown-linux-gnu | FileCheck %s --check-prefix=X86 ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s --check-prefix=X64 @a = common global i32 0, align 4 @b = common global i32 0, align 4 @c = common global i32 0, align 4 @e = common global i32 0, align 4 @x = common global i32 0, align 4 @f = common global i32 0, align 4 @h = common global i32 0, align 4 @i = common global i32 0, align 4 ; Test -Os to make sure immediates with multiple users don't get pulled in to ; instructions. define i32 @foo() optsize { ; X86-LABEL: foo: ; X86: # %bb.0: # %entry ; X86-NEXT: movl $1234, %eax # imm = 0x4D2 ; X86-NEXT: movl %eax, a ; X86-NEXT: movl %eax, b ; X86-NEXT: movl $12, %eax ; X86-NEXT: movl %eax, c ; X86-NEXT: cmpl %eax, e ; X86-NEXT: jne .LBB0_2 ; X86-NEXT: # %bb.1: # %if.then ; X86-NEXT: movl $1, x ; X86-NEXT: .LBB0_2: # %if.end ; X86-NEXT: movl $1234, f # imm = 0x4D2 ; X86-NEXT: movl $555, %eax # imm = 0x22B ; X86-NEXT: movl %eax, h ; X86-NEXT: addl %eax, i ; X86-NEXT: xorl %eax, %eax ; X86-NEXT: retl ; ; X64-LABEL: foo: ; X64: # %bb.0: # %entry ; X64-NEXT: movl $1234, %eax # imm = 0x4D2 ; X64-NEXT: movl %eax, {{.*}}(%rip) ; X64-NEXT: movl %eax, {{.*}}(%rip) ; X64-NEXT: movl $12, %eax ; X64-NEXT: movl %eax, {{.*}}(%rip) ; X64-NEXT: cmpl %eax, {{.*}}(%rip) ; X64-NEXT: jne .LBB0_2 ; X64-NEXT: # %bb.1: # %if.then ; X64-NEXT: movl $1, {{.*}}(%rip) ; X64-NEXT: .LBB0_2: # %if.end ; X64-NEXT: movl $1234, {{.*}}(%rip) # imm = 0x4D2 ; X64-NEXT: movl $555, %eax # imm = 0x22B ; X64-NEXT: movl %eax, {{.*}}(%rip) ; X64-NEXT: addl %eax, {{.*}}(%rip) ; X64-NEXT: xorl %eax, %eax ; X64-NEXT: retq entry: store i32 1234, i32* @a store i32 1234, i32* @b store i32 12, i32* @c %0 = load i32, i32* @e %cmp = icmp eq i32 %0, 12 br i1 %cmp, label %if.then, label %if.end if.then: ; preds = %entry store i32 1, i32* @x br label %if.end ; New block.. Make sure 1234 isn't live across basic blocks from before. if.end: ; preds = %if.then, %entry store i32 1234, i32* @f store i32 555, i32* @h %1 = load i32, i32* @i %add1 = add nsw i32 %1, 555 store i32 %add1, i32* @i ret i32 0 } ; Test -O2 to make sure that all immediates get pulled in to their users. define i32 @foo2() { ; X86-LABEL: foo2: ; X86: # %bb.0: # %entry ; X86-NEXT: movl $1234, a # imm = 0x4D2 ; X86-NEXT: movl $1234, b # imm = 0x4D2 ; X86-NEXT: xorl %eax, %eax ; X86-NEXT: retl ; ; X64-LABEL: foo2: ; X64: # %bb.0: # %entry ; X64-NEXT: movl $1234, {{.*}}(%rip) # imm = 0x4D2 ; X64-NEXT: movl $1234, {{.*}}(%rip) # imm = 0x4D2 ; X64-NEXT: xorl %eax, %eax ; X64-NEXT: retq entry: store i32 1234, i32* @a store i32 1234, i32* @b ret i32 0 } declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) #1 @AA = common global [100 x i8] zeroinitializer, align 1 ; memset gets lowered in DAG. Constant merging should hoist all the ; immediates used to store to the individual memory locations. Make ; sure we don't directly store the immediates. define void @foomemset() optsize { ; X86-LABEL: foomemset: ; X86: # %bb.0: # %entry ; X86-NEXT: movl $555819297, %eax # imm = 0x21212121 ; X86-NEXT: movl %eax, AA+20 ; X86-NEXT: movl %eax, AA+16 ; X86-NEXT: movl %eax, AA+12 ; X86-NEXT: movl %eax, AA+8 ; X86-NEXT: movl %eax, AA+4 ; X86-NEXT: movl %eax, AA ; X86-NEXT: retl ; ; X64-LABEL: foomemset: ; X64: # %bb.0: # %entry ; X64-NEXT: movabsq $2387225703656530209, %rax # imm = 0x2121212121212121 ; X64-NEXT: movq %rax, AA+{{.*}}(%rip) ; X64-NEXT: movq %rax, AA+{{.*}}(%rip) ; X64-NEXT: movq %rax, {{.*}}(%rip) ; X64-NEXT: retq entry: call void @llvm.memset.p0i8.i32(i8* getelementptr inbounds ([100 x i8], [100 x i8]* @AA, i32 0, i32 0), i8 33, i32 24, i32 1, i1 false) ret void }