c80c09f3e3
Fixes #99396 The result of `VirtRegAuxInfo::weightCalcHelper` can be influenced by x87 excess precision, which can result in slightly different register choices when the compiler is hosted on x86_64 or i386. This leads to different object file output when cross-compiling to i386, or native. Similar to 7af3432e22b0, we need to add a `volatile` qualifier to the local `Weight` variable to force it onto the stack, and avoid the excess precision. Define `stack_float_t` in `MathExtras.h` for this purpose, and use it.
57 lines
2.1 KiB
LLVM
57 lines
2.1 KiB
LLVM
; RUN: llc < %s -mtriple=i386-unknown-freebsd -enable-misched -relocation-model=pic | FileCheck %s
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@c = external local_unnamed_addr global ptr
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declare i32 @fn2() local_unnamed_addr
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declare i32 @fn3() local_unnamed_addr
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define noundef i32 @fn4() #0 {
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entry:
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%tmp0 = load i32, ptr @fn4, align 4
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; CHECK: movl fn4@GOT(%ebx), %edi
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; CHECK-NEXT: movl (%edi), %edx
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%tmp1 = load ptr, ptr @c, align 4
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; CHECK: movl c@GOT(%ebx), %eax
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; CHECK-NEXT: movl (%eax), %esi
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; CHECK-NEXT: testl %esi, %esi
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%cmp.g = icmp eq ptr %tmp1, null
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br i1 %cmp.g, label %if.then.g, label %if.end3.g
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if.then.g: ; preds = %entry
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%tmp2 = load i32, ptr inttoptr (i32 1 to ptr), align 4
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%cmp1.g = icmp slt i32 %tmp2, 0
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br i1 %cmp1.g, label %if.then2.g, label %if.end3.g
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if.then2.g: ; preds = %if.then.g
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%.g = load volatile i32, ptr null, align 2147483648
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br label %f.exit
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if.end3.g: ; preds = %if.then.g, %entry
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%h.i.g = icmp eq i32 %tmp0, 0
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br i1 %h.i.g, label %f.exit, label %while.body.g
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while.body.g: ; preds = %if.end3.g, %if.end8.g
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%buff.addr.019.g = phi ptr [ %incdec.ptr.g, %if.end8.g ], [ @fn4, %if.end3.g ]
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%g.addr.018.g = phi i32 [ %dec.g, %if.end8.g ], [ %tmp0, %if.end3.g ]
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%call4.g = tail call i32 @fn3(ptr %tmp1, ptr %buff.addr.019.g, i32 %g.addr.018.g)
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%cmp5.g = icmp slt i32 %call4.g, 0
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br i1 %cmp5.g, label %if.then6.g, label %if.end8.g
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if.then6.g: ; preds = %while.body.g
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%call7.g = tail call i32 @fn2(ptr null)
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br label %f.exit
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if.end8.g: ; preds = %while.body.g
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%dec.g = add i32 %g.addr.018.g, 1
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%incdec.ptr.g = getelementptr i32, ptr %buff.addr.019.g, i32 1
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store i64 0, ptr %tmp1, align 4
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%h.not.g = icmp eq i32 %dec.g, 0
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br i1 %h.not.g, label %f.exit, label %while.body.g
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f.exit: ; preds = %if.end8.g, %if.then6.g, %if.end3.g, %if.then2.g
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ret i32 0
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}
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attributes #0 = { "frame-pointer"="all" "tune-cpu"="generic" }
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