1 ; RUN: llc < %s -fast-isel -O0 -regalloc=fast -asm-verbose=0 -fast-isel-abort | FileCheck %s
3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
4 target triple = "x86_64-apple-darwin10.0.0"
6 ; Make sure that fast-isel folds the immediate into the binop even though it
8 define i32 @test1(i32 %i) nounwind ssp {
17 ; rdar://9289512 - The load should fold into the compare.
18 define void @test2(i64 %x) nounwind ssp {
20 %x.addr = alloca i64, align 8
21 store i64 %x, i64* %x.addr, align 8
22 %tmp = load i64* %x.addr, align 8
23 %cmp = icmp sgt i64 %tmp, 42
24 br i1 %cmp, label %if.then, label %if.end
26 if.then: ; preds = %entry
29 if.end: ; preds = %if.then, %entry
32 ; CHECK: movq %rdi, -8(%rsp)
33 ; CHECK: cmpq $42, -8(%rsp)
39 @G = external global i32
40 define i64 @test3() nounwind {
41 %A = ptrtoint i32* @G to i64
44 ; CHECK: movq _G@GOTPCREL(%rip), %rax
51 @rtx_length = external global [153 x i8]
53 define i32 @test4(i64 %idxprom9) nounwind {
54 %arrayidx10 = getelementptr inbounds [153 x i8]* @rtx_length, i32 0, i64 %idxprom9
55 %tmp11 = load i8* %arrayidx10, align 1
56 %conv = zext i8 %tmp11 to i32
60 ; CHECK: movq _rtx_length@GOTPCREL(%rip), %rax
61 ; CHECK-NEXT: movzbl (%rax,%rdi), %eax
66 ; PR3242 - Out of range shifts should not be folded by fastisel.
67 define void @test5(i32 %x, i32* %p) nounwind {
68 %y = ashr i32 %x, 50000
73 ; CHECK: movl $50000, %ecx
74 ; CHECK: sarl %cl, %edi
78 ; rdar://9289501 - fast isel should fold trivial multiplies to shifts.
79 define i64 @test6(i64 %x) nounwind ssp {
81 %mul = mul nsw i64 %x, 8
85 ; CHECK: leaq (,%rdi,8), %rax
88 define i32 @test7(i32 %x) nounwind ssp {
90 %mul = mul nsw i32 %x, 8
93 ; CHECK: leal (,%rdi,8), %eax
97 ; rdar://9289507 - folding of immediates into 64-bit operations.
98 define i64 @test8(i64 %x) nounwind ssp {
100 %add = add nsw i64 %x, 7
104 ; CHECK: addq $7, %rdi
107 define i64 @test9(i64 %x) nounwind ssp {
109 %add = mul nsw i64 %x, 7
112 ; CHECK: imulq $7, %rdi, %rax
115 ; rdar://9297011 - Don't reject udiv by a power of 2.
116 define i32 @test10(i32 %X) nounwind {
123 define i32 @test11(i32 %X) nounwind {
124 %Y = sdiv exact i32 %X, 8
131 ; rdar://9297006 - Trunc to bool.
132 define void @test12(i8 %tmp) nounwind ssp noredzone {
134 %tobool = trunc i8 %tmp to i1
135 br i1 %tobool, label %if.then, label %if.end
137 if.then: ; preds = %entry
138 call void @test12(i8 0) noredzone
141 if.end: ; preds = %if.then, %entry
146 ; CHECK-NEXT: movl $0, %edi
150 declare void @test13f(i1 %X)
152 define void @test13() nounwind {
153 call void @test13f(i1 0)
156 ; CHECK: movl $0, %edi
162 ; rdar://9297003 - fast isel bails out on all functions taking bools
163 define void @test14(i8 %tmp) nounwind ssp noredzone {
165 %tobool = trunc i8 %tmp to i1
166 call void @test13f(i1 zeroext %tobool) noredzone
173 declare void @llvm.memcpy.p0i8.p0i8.i64(i8*, i8*, i64, i32, i1)
175 ; rdar://9289488 - fast-isel shouldn't bail out on llvm.memcpy
176 define void @test15(i8* %a, i8* %b) nounwind {
177 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 4, i32 4, i1 false)
180 ; CHECK-NEXT: movl (%rsi), %eax
181 ; CHECK-NEXT: movl %eax, (%rdi)
185 ; Handling for varargs calls
186 declare void @test16callee(...) nounwind
187 define void @test16() nounwind {
189 ; CHECK: movl $1, %edi
190 ; CHECK: movb $0, %al
191 ; CHECK: callq _test16callee
192 call void (...)* @test16callee(i32 1)
197 ; CHECK: cvtsi2sdq {{.*}} %xmm0
198 ; CHECK: movb $1, %al
199 ; CHECK: callq _test16callee
200 call void (...)* @test16callee(double 1.000000e+00)