1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=i386-unknown-linux-gnu | FileCheck %s --check-prefix=X86 3; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s --check-prefix=X64 4 5@a = common global i32 0, align 4 6@b = common global i32 0, align 4 7@c = common global i32 0, align 4 8@e = common global i32 0, align 4 9@x = common global i32 0, align 4 10@f = common global i32 0, align 4 11@h = common global i32 0, align 4 12@i = common global i32 0, align 4 13 14; Test -Os to make sure immediates with multiple users don't get pulled in to 15; instructions. 16define i32 @foo() optsize { 17; X86-LABEL: foo: 18; X86: # %bb.0: # %entry 19; X86-NEXT: movl $1234, %eax # imm = 0x4D2 20; X86-NEXT: movl %eax, a 21; X86-NEXT: movl %eax, b 22; X86-NEXT: movl $12, %eax 23; X86-NEXT: movl %eax, c 24; X86-NEXT: cmpl %eax, e 25; X86-NEXT: jne .LBB0_2 26; X86-NEXT: # %bb.1: # %if.then 27; X86-NEXT: movl $1, x 28; X86-NEXT: .LBB0_2: # %if.end 29; X86-NEXT: movl $1234, f # imm = 0x4D2 30; X86-NEXT: movl $555, %eax # imm = 0x22B 31; X86-NEXT: movl %eax, h 32; X86-NEXT: addl %eax, i 33; X86-NEXT: xorl %eax, %eax 34; X86-NEXT: retl 35; 36; X64-LABEL: foo: 37; X64: # %bb.0: # %entry 38; X64-NEXT: movl $1234, %eax # imm = 0x4D2 39; X64-NEXT: movl %eax, {{.*}}(%rip) 40; X64-NEXT: movl %eax, {{.*}}(%rip) 41; X64-NEXT: movl $12, %eax 42; X64-NEXT: movl %eax, {{.*}}(%rip) 43; X64-NEXT: cmpl %eax, {{.*}}(%rip) 44; X64-NEXT: jne .LBB0_2 45; X64-NEXT: # %bb.1: # %if.then 46; X64-NEXT: movl $1, {{.*}}(%rip) 47; X64-NEXT: .LBB0_2: # %if.end 48; X64-NEXT: movl $1234, {{.*}}(%rip) # imm = 0x4D2 49; X64-NEXT: movl $555, %eax # imm = 0x22B 50; X64-NEXT: movl %eax, {{.*}}(%rip) 51; X64-NEXT: addl %eax, {{.*}}(%rip) 52; X64-NEXT: xorl %eax, %eax 53; X64-NEXT: retq 54entry: 55 store i32 1234, i32* @a 56 store i32 1234, i32* @b 57 store i32 12, i32* @c 58 %0 = load i32, i32* @e 59 %cmp = icmp eq i32 %0, 12 60 br i1 %cmp, label %if.then, label %if.end 61 62if.then: ; preds = %entry 63 store i32 1, i32* @x 64 br label %if.end 65 66; New block.. Make sure 1234 isn't live across basic blocks from before. 67if.end: ; preds = %if.then, %entry 68 store i32 1234, i32* @f 69 store i32 555, i32* @h 70 %1 = load i32, i32* @i 71 %add1 = add nsw i32 %1, 555 72 store i32 %add1, i32* @i 73 ret i32 0 74} 75 76; Test -O2 to make sure that all immediates get pulled in to their users. 77define i32 @foo2() { 78; X86-LABEL: foo2: 79; X86: # %bb.0: # %entry 80; X86-NEXT: movl $1234, a # imm = 0x4D2 81; X86-NEXT: movl $1234, b # imm = 0x4D2 82; X86-NEXT: xorl %eax, %eax 83; X86-NEXT: retl 84; 85; X64-LABEL: foo2: 86; X64: # %bb.0: # %entry 87; X64-NEXT: movl $1234, {{.*}}(%rip) # imm = 0x4D2 88; X64-NEXT: movl $1234, {{.*}}(%rip) # imm = 0x4D2 89; X64-NEXT: xorl %eax, %eax 90; X64-NEXT: retq 91entry: 92 store i32 1234, i32* @a 93 store i32 1234, i32* @b 94 ret i32 0 95} 96 97declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i1) #1 98 99@AA = common global [100 x i8] zeroinitializer, align 1 100 101; memset gets lowered in DAG. Constant merging should hoist all the 102; immediates used to store to the individual memory locations. Make 103; sure we don't directly store the immediates. 104define void @foomemset() optsize { 105; X86-LABEL: foomemset: 106; X86: # %bb.0: # %entry 107; X86-NEXT: movl $555819297, %eax # imm = 0x21212121 108; X86-NEXT: movl %eax, AA+20 109; X86-NEXT: movl %eax, AA+16 110; X86-NEXT: movl %eax, AA+12 111; X86-NEXT: movl %eax, AA+8 112; X86-NEXT: movl %eax, AA+4 113; X86-NEXT: movl %eax, AA 114; X86-NEXT: retl 115; 116; X64-LABEL: foomemset: 117; X64: # %bb.0: # %entry 118; X64-NEXT: movabsq $2387225703656530209, %rax # imm = 0x2121212121212121 119; X64-NEXT: movq %rax, AA+{{.*}}(%rip) 120; X64-NEXT: movq %rax, AA+{{.*}}(%rip) 121; X64-NEXT: movq %rax, {{.*}}(%rip) 122; X64-NEXT: retq 123entry: 124 call void @llvm.memset.p0i8.i32(i8* getelementptr inbounds ([100 x i8], [100 x i8]* @AA, i32 0, i32 0), i8 33, i32 24, i1 false) 125 ret void 126} 127