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; RUN: llc -mtriple=x86_64-apple-macosx -mcpu=core2 < %s | FileCheck %s
declare i64 @testi()
define i64 @test_trivial() {
%A = tail call i64 @testi()
ret i64 %A
}
; CHECK: test_trivial:
; CHECK: jmp _testi ## TAILCALL
define i64 @test_noop_bitcast() {
%A = tail call i64 @testi()
%B = bitcast i64 %A to i64
ret i64 %B
}
; CHECK: test_noop_bitcast:
; CHECK: jmp _testi ## TAILCALL
; Tail call shouldn't be blocked by no-op inttoptr.
define i8* @test_inttoptr() {
%A = tail call i64 @testi()
%B = inttoptr i64 %A to i8*
ret i8* %B
}
; CHECK: test_inttoptr:
; CHECK: jmp _testi ## TAILCALL
declare <4 x float> @testv()
define <4 x i32> @test_vectorbitcast() {
%A = tail call <4 x float> @testv()
%B = bitcast <4 x float> %A to <4 x i32>
ret <4 x i32> %B
}
; CHECK: test_vectorbitcast:
; CHECK: jmp _testv ## TAILCALL
declare { i64, i64 } @testp()
define {i64, i64} @test_pair_trivial() {
%A = tail call { i64, i64} @testp()
ret { i64, i64} %A
}
; CHECK: test_pair_trivial:
; CHECK: jmp _testp ## TAILCALL
define {i64, i64} @test_pair_trivial_extract() {
%A = tail call { i64, i64} @testp()
%x = extractvalue { i64, i64} %A, 0
%y = extractvalue { i64, i64} %A, 1
%b = insertvalue {i64, i64} undef, i64 %x, 0
%c = insertvalue {i64, i64} %b, i64 %y, 1
ret { i64, i64} %c
}
; CHECK: test_pair_trivial_extract:
; CHECK: jmp _testp ## TAILCALL
define {i8*, i64} @test_pair_conv_extract() {
%A = tail call { i64, i64} @testp()
%x = extractvalue { i64, i64} %A, 0
%y = extractvalue { i64, i64} %A, 1
%x1 = inttoptr i64 %x to i8*
%b = insertvalue {i8*, i64} undef, i8* %x1, 0
%c = insertvalue {i8*, i64} %b, i64 %y, 1
ret { i8*, i64} %c
}
; CHECK: test_pair_conv_extract:
; CHECK: jmp _testp ## TAILCALL
; PR13006
define { i64, i64 } @crash(i8* %this) {
%c = tail call { i64, i64 } @testp()
%mrv7 = insertvalue { i64, i64 } %c, i64 undef, 1
ret { i64, i64 } %mrv7
}
; Check that we can fold an indexed load into a tail call instruction.
; CHECK: fold_indexed_load
; CHECK: leaq (%rsi,%rsi,4), %[[RAX:r..]]
; CHECK: jmpq *16(%{{r..}},%[[RAX]],8) # TAILCALL
%struct.funcs = type { i32 (i8*, i32*, i32)*, i32 (i8*)*, i32 (i8*)*, i32 (i8*, i32)*, i32 }
@func_table = external global [0 x %struct.funcs]
define void @fold_indexed_load(i8* %mbstr, i64 %idxprom) nounwind uwtable ssp {
entry:
%dsplen = getelementptr inbounds [0 x %struct.funcs]* @func_table, i64 0, i64 %idxprom, i32 2
%x1 = load i32 (i8*)** %dsplen, align 8
%call = tail call i32 %x1(i8* %mbstr) nounwind
ret void
}
; <rdar://problem/12282281> Fold an indexed load into the tail call instruction.
; Calling a varargs function with 6 arguments requires 7 registers (%al is the
; vector count for varargs functions). This leaves %r11 as the only available
; scratch register.
;
; It is not possible to fold an indexed load into TCRETURNmi64 in that case.
;
; typedef int (*funcptr)(void*, ...);
; extern const funcptr funcs[];
; int f(int n) {
; return funcs[n](0, 0, 0, 0, 0, 0);
; }
;
; CHECK: rdar12282281
; CHECK: jmpq *%r11 # TAILCALL
@funcs = external constant [0 x i32 (i8*, ...)*]
define i32 @rdar12282281(i32 %n) nounwind uwtable ssp {
entry:
%idxprom = sext i32 %n to i64
%arrayidx = getelementptr inbounds [0 x i32 (i8*, ...)*]* @funcs, i64 0, i64 %idxprom
%0 = load i32 (i8*, ...)** %arrayidx, align 8
%call = tail call i32 (i8*, ...)* %0(i8* null, i32 0, i32 0, i32 0, i32 0, i32 0) nounwind
ret i32 %call
}
define x86_fp80 @fp80_call(x86_fp80 %x) nounwind {
entry:
; CHECK: fp80_call:
; CHECK: jmp _fp80_callee
%call = tail call x86_fp80 @fp80_callee(x86_fp80 %x) nounwind
ret x86_fp80 %call
}
declare x86_fp80 @fp80_callee(x86_fp80)
; rdar://12229511
define x86_fp80 @trunc_fp80(x86_fp80 %x) nounwind {
entry:
; CHECK: trunc_fp80
; CHECK: callq _trunc
; CHECK-NOT: jmp _trunc
; CHECK: ret
%conv = fptrunc x86_fp80 %x to double
%call = tail call double @trunc(double %conv) nounwind readnone
%conv1 = fpext double %call to x86_fp80
ret x86_fp80 %conv1
}
declare double @trunc(double) nounwind readnone
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