forked from OSchip/llvm-project
286 lines
6.3 KiB
LLVM
286 lines
6.3 KiB
LLVM
; RUN: llc < %s -fast-isel -O0 -regalloc=fast -asm-verbose=0 -fast-isel-abort | FileCheck %s
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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"
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target triple = "x86_64-apple-darwin10.0.0"
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; Make sure that fast-isel folds the immediate into the binop even though it
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; is non-canonical.
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define i32 @test1(i32 %i) nounwind ssp {
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%and = and i32 8, %i
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ret i32 %and
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}
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; CHECK: test1:
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; CHECK: andl $8,
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; rdar://9289512 - The load should fold into the compare.
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define void @test2(i64 %x) nounwind ssp {
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entry:
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%x.addr = alloca i64, align 8
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store i64 %x, i64* %x.addr, align 8
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%tmp = load i64* %x.addr, align 8
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%cmp = icmp sgt i64 %tmp, 42
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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; CHECK: test2:
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; CHECK: movq %rdi, -8(%rsp)
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; CHECK: cmpq $42, -8(%rsp)
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}
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@G = external global i32
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define i64 @test3() nounwind {
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%A = ptrtoint i32* @G to i64
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ret i64 %A
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; CHECK: test3:
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; CHECK: movq _G@GOTPCREL(%rip), %rax
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; CHECK-NEXT: ret
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}
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; rdar://9289558
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@rtx_length = external global [153 x i8]
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define i32 @test4(i64 %idxprom9) nounwind {
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%arrayidx10 = getelementptr inbounds [153 x i8]* @rtx_length, i32 0, i64 %idxprom9
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%tmp11 = load i8* %arrayidx10, align 1
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%conv = zext i8 %tmp11 to i32
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ret i32 %conv
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; CHECK: test4:
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; CHECK: movq _rtx_length@GOTPCREL(%rip), %rax
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; CHECK-NEXT: movzbl (%rax,%rdi), %eax
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; CHECK-NEXT: ret
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}
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; PR3242 - Out of range shifts should not be folded by fastisel.
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define void @test5(i32 %x, i32* %p) nounwind {
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%y = ashr i32 %x, 50000
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store i32 %y, i32* %p
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ret void
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; CHECK: test5:
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; CHECK: movl $50000, %ecx
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; CHECK: sarl %cl, %edi
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; CHECK: ret
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}
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; rdar://9289501 - fast isel should fold trivial multiplies to shifts.
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define i64 @test6(i64 %x) nounwind ssp {
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entry:
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%mul = mul nsw i64 %x, 8
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ret i64 %mul
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; CHECK: test6:
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; CHECK: leaq (,%rdi,8), %rax
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}
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define i32 @test7(i32 %x) nounwind ssp {
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entry:
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%mul = mul nsw i32 %x, 8
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ret i32 %mul
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; CHECK: test7:
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; CHECK: leal (,%rdi,8), %eax
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}
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; rdar://9289507 - folding of immediates into 64-bit operations.
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define i64 @test8(i64 %x) nounwind ssp {
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entry:
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%add = add nsw i64 %x, 7
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ret i64 %add
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; CHECK: test8:
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; CHECK: addq $7, %rdi
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}
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define i64 @test9(i64 %x) nounwind ssp {
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entry:
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%add = mul nsw i64 %x, 7
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ret i64 %add
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; CHECK: test9:
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; CHECK: imulq $7, %rdi, %rax
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}
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; rdar://9297011 - Don't reject udiv by a power of 2.
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define i32 @test10(i32 %X) nounwind {
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%Y = udiv i32 %X, 8
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ret i32 %Y
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; CHECK: test10:
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; CHECK: shrl $3,
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}
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define i32 @test11(i32 %X) nounwind {
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%Y = sdiv exact i32 %X, 8
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ret i32 %Y
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; CHECK: test11:
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; CHECK: sarl $3,
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}
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; rdar://9297006 - Trunc to bool.
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define void @test12(i8 %tmp) nounwind ssp noredzone {
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entry:
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%tobool = trunc i8 %tmp to i1
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br i1 %tobool, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @test12(i8 0) noredzone
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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; CHECK: test12:
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; CHECK: testb $1,
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; CHECK-NEXT: je L
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; CHECK-NEXT: movl $0, %edi
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; CHECK-NEXT: callq
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}
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declare void @test13f(i1 %X)
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define void @test13() nounwind {
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call void @test13f(i1 0)
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ret void
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; CHECK: test13:
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; CHECK: movl $0, %edi
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; CHECK-NEXT: callq
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}
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; rdar://9297003 - fast isel bails out on all functions taking bools
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define void @test14(i8 %tmp) nounwind ssp noredzone {
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entry:
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%tobool = trunc i8 %tmp to i1
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call void @test13f(i1 zeroext %tobool) noredzone
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ret void
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; CHECK: test14:
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; CHECK: andb $1,
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; CHECK: callq
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8*, i8*, i64, i32, i1)
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; rdar://9289488 - fast-isel shouldn't bail out on llvm.memcpy
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define void @test15(i8* %a, i8* %b) nounwind {
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 4, i32 4, i1 false)
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ret void
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; CHECK: test15:
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; CHECK-NEXT: movl (%rsi), %eax
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; CHECK-NEXT: movl %eax, (%rdi)
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; CHECK-NEXT: ret
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}
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; Handling for varargs calls
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declare void @test16callee(...) nounwind
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define void @test16() nounwind {
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; CHECK: test16:
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; CHECK: movl $1, %edi
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; CHECK: movb $0, %al
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; CHECK: callq _test16callee
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call void (...)* @test16callee(i32 1)
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br label %block2
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block2:
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; CHECK: movabsq $1
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; CHECK: cvtsi2sdq {{.*}} %xmm0
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; CHECK: movb $1, %al
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; CHECK: callq _test16callee
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call void (...)* @test16callee(double 1.000000e+00)
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ret void
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}
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declare void @foo() unnamed_addr ssp align 2
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; Verify that we don't fold the load into the compare here. That would move it
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; w.r.t. the call.
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define i32 @test17(i32 *%P) ssp nounwind {
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entry:
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%tmp = load i32* %P
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%cmp = icmp ne i32 %tmp, 5
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call void @foo()
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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ret i32 1
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if.else: ; preds = %entry
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ret i32 2
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; CHECK: test17:
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; CHECK: movl (%rdi), %eax
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; CHECK: callq _foo
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; CHECK: cmpl $5, %eax
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; CHECK-NEXT: je
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}
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; Check that 0.0 is materialized using pxor
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define void @test18(float* %p1) {
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store float 0.0, float* %p1
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ret void
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; CHECK: test18:
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; CHECK: pxor
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}
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define void @test19(double* %p1) {
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store double 0.0, double* %p1
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ret void
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; CHECK: test19:
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; CHECK: pxor
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}
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; Check that we fast-isel sret
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%struct.a = type { i64, i64, i64 }
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define void @test20() nounwind ssp {
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entry:
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%tmp = alloca %struct.a, align 8
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call void @test20sret(%struct.a* sret %tmp)
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ret void
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; CHECK: test20:
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; CHECK: leaq (%rsp), %rdi
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; CHECK: callq _test20sret
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}
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declare void @test20sret(%struct.a* sret)
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; Check that -0.0 is not materialized using pxor
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define void @test21(double* %p1) {
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store double -0.0, double* %p1
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ret void
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; CHECK: test21:
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; CHECK-NOT: pxor
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; CHECK: movsd LCPI
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}
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; Check that immediate arguments to a function
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; do not cause massive spilling and are used
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; as immediates just before the call.
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define void @test22() nounwind {
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entry:
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call void @foo22(i32 0)
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call void @foo22(i32 1)
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call void @foo22(i32 2)
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call void @foo22(i32 3)
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ret void
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; CHECK: test22:
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; CHECK: movl $0, %edi
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; CHECK: callq _foo22
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; CHECK: movl $1, %edi
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; CHECK: callq _foo22
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; CHECK: movl $2, %edi
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; CHECK: callq _foo22
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; CHECK: movl $3, %edi
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; CHECK: callq _foo22
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}
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declare void @foo22(i32)
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