1 ; RUN: llc < %s | FileCheck %s 2 ; RUN: llc < %s -regalloc=fast | FileCheck %s 3 ; The first argument of subfc must not be the same as any other register. 4 5 ; CHECK: subfc [[REG:r.]], 6 ; CHECK-NOT: [[REG]] 7 ; CHECK: InlineAsm End 8 ; PR1357 9 10 target datalayout = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64" 11 target triple = "powerpc-apple-darwin8.8.0" 12 13 ;long long test(int A, int B, int C) { 14 ; unsigned X, Y; 15 ; __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2" 16 ; : "=r" (X), "=&r" (Y) 17 ; : "r" (A), "rI" (B), "r" (C)); 18 ; return ((long long)Y << 32) | X; 19 ;} 20 21 define i64 @test(i32 %A, i32 %B, i32 %C) nounwind { 22 entry: 23 %Y = alloca i32, align 4 ; <i32*> [#uses=2] 24 %tmp4 = call i32 asm "subf${3:I}c $1,$4,$3\0A\09subfze $0,$2", "=r,=*&r,r,rI,r"( i32* %Y, i32 %A, i32 %B, i32 %C ) ; <i32> [#uses=1] 25 %tmp5 = load i32* %Y ; <i32> [#uses=1] 26 %tmp56 = zext i32 %tmp5 to i64 ; <i64> [#uses=1] 27 %tmp7 = shl i64 %tmp56, 32 ; <i64> [#uses=1] 28 %tmp89 = zext i32 %tmp4 to i64 ; <i64> [#uses=1] 29 %tmp10 = or i64 %tmp7, %tmp89 ; <i64> [#uses=1] 30 ret i64 %tmp10 31 } 32
