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https://github.com/RPCS3/llvm-mirror.git
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43ee82f217
Enable multiple COPY hints to eliminate more COPYs during register allocation. Note that this is something all targets should do, see https://reviews.llvm.org/D38128. Review: Yonghong Song llvm-svn: 325457
118 lines
3.0 KiB
LLVM
118 lines
3.0 KiB
LLVM
; RUN: llc < %s -march=bpfel | FileCheck %s
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@foo_printf.fmt = private unnamed_addr constant [9 x i8] c"hello \0A\00", align 1
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; Function Attrs: nounwind readnone uwtable
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define i32 @foo_int(i32 %a, i32 %b) #0 {
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%1 = add nsw i32 %b, %a
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ret i32 %1
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; CHECK-LABEL: foo_int:
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; CHECK: r0 += r1
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}
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; Function Attrs: nounwind readnone uwtable
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define signext i8 @foo_char(i8 signext %a, i8 signext %b) #0 {
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%1 = add i8 %b, %a
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ret i8 %1
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; CHECK-LABEL: foo_char:
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; CHECK: r0 += r1
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; CHECK: r0 <<= 56
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; CHECK: r0 s>>= 56
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}
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; Function Attrs: nounwind readnone uwtable
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define i64 @foo_ll(i64 %a, i64 %b, i64 %c) #0 {
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%1 = add nsw i64 %b, %a
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%2 = sub i64 %1, %c
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ret i64 %2
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; CHECK-LABEL: foo_ll:
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; CHECK: r0 = r2
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; CHECK: r0 += r1
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; CHECK: r0 -= r3
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}
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; Function Attrs: nounwind uwtable
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define void @foo_call2(i32 %a, i32 %b) #1 {
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%1 = trunc i32 %b to i8
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tail call void @foo_2arg(i8 signext %1, i32 %a) #3
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ret void
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; CHECK-LABEL: foo_call2:
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; CHECK: r2 <<= 56
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; CHECK: r2 s>>= 56
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; CHECK: r1 = r2
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}
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declare void @foo_2arg(i8 signext, i32) #2
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; Function Attrs: nounwind uwtable
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define i32 @foo_call5(i8 signext %a, i16 signext %b, i32 %c, i64 %d) #1 {
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%1 = tail call i32 @bar(i8 signext %a, i16 signext %b, i32 %c, i64 %d) #3
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ret i32 0
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; CHECK-LABEL: foo_call5:
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; CHECK: call bar
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}
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declare i32 @bar(i8 signext, i16 signext, i32, i64) #2
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; Function Attrs: nounwind readnone uwtable
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define signext i8 @foo_cmp(i8 signext %a, i8 signext %b) #0 {
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%1 = icmp slt i8 %a, %b
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%a.b = select i1 %1, i8 %a, i8 %b
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ret i8 %a.b
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; CHECK-LABEL: foo_cmp:
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; CHECK: if r2 s> r0
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}
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; Function Attrs: nounwind readnone uwtable
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define i32 @foo_muldiv(i8 signext %a, i16 signext %b, i32 %c, i64 %d) #0 {
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%1 = icmp eq i8 %a, 0
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br i1 %1, label %5, label %2
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; <label>:2 ; preds = %0
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%3 = sext i16 %b to i32
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%4 = mul nsw i32 %3, %c
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br label %8
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; <label>:5 ; preds = %0
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%6 = trunc i64 %d to i32
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%7 = udiv i32 %6, %c
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br label %8
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; <label>:8 ; preds = %5, %2
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%.0 = phi i32 [ %4, %2 ], [ %7, %5 ]
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ret i32 %.0
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; CHECK-LABEL: foo_muldiv:
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; CHECK: r0 *= r3
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}
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; Function Attrs: nounwind uwtable
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define i32 @foo_optimized() #1 {
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%1 = tail call i32 @manyarg(i32 1, i32 2, i32 3, i32 4, i32 5) #3
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ret i32 %1
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; CHECK-LABEL: foo_optimized:
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; CHECK: r1 = 1
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; CHECK: r2 = 2
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; CHECK: r3 = 3
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; CHECK: r4 = 4
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; CHECK: r5 = 5
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}
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declare i32 @manyarg(i32, i32, i32, i32, i32) #2
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; Function Attrs: nounwind uwtable
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define void @foo_printf() #1 {
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%fmt = alloca [9 x i8], align 1
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%1 = getelementptr inbounds [9 x i8], [9 x i8]* %fmt, i64 0, i64 0
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @foo_printf.fmt, i64 0, i64 0), i64 9, i1 false)
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; CHECK-LABEL: foo_printf:
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; CHECK: r1 = 729618802566522216 ll
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%2 = call i32 (i8*, ...) @printf(i8* %1) #3
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ret void
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}
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; Function Attrs: nounwind
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) #3
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; Function Attrs: nounwind
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declare i32 @printf(i8* nocapture, ...) #4
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