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f95962007a
This patch prevents CTR loops optimization when using soft float operations inside loop body. Soft float operations use function calls, but function calls are not allowed inside CTR optimized loops. Patch by Aleksandar Beserminji. Differential Revision: http://reviews.llvm.org/D17600 llvm-svn: 263727
130 lines
3.4 KiB
LLVM
130 lines
3.4 KiB
LLVM
; RUN: llc -mtriple=powerpc-unknown-linux-gnu -O1 < %s | FileCheck %s
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; double x, y;
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;
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; void foo1()
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; {
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; x = y = 1.1;
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; for (int i = 0; i < 175; i++)
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; y = x + y;
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; }
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; void foo2()
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; {
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; x = y = 1.1;
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; for (int i = 0; i < 175; i++)
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; y = x - y;
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; }
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; void foo3()
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; {
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; x = y = 1.1;
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; for (int i = 0; i < 175; i++)
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; y = x * y;
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; }
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; void foo4()
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; {
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; x = y = 1.1;
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; for (int i = 0; i < 175; i++)
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; y = x / y;
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; }
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target datalayout = "E-m:e-p:32:32-i64:64-n32"
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target triple = "powerpc-buildroot-linux-gnu"
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@y = common global double 0.000000e+00, align 8
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@x = common global double 0.000000e+00, align 8
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define void @foo1() #0 {
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store double 1.100000e+00, double* @y, align 8
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store double 1.100000e+00, double* @x, align 8
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br label %2
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; <label>:1 ; preds = %2
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%.lcssa = phi double [ %4, %2 ]
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store double %.lcssa, double* @y, align 8
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ret void
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; <label>:2 ; preds = %2, %0
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%3 = phi double [ 1.100000e+00, %0 ], [ %4, %2 ]
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%i.01 = phi i32 [ 0, %0 ], [ %5, %2 ]
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%4 = fadd double %3, 1.100000e+00
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%5 = add nuw nsw i32 %i.01, 1
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%exitcond = icmp eq i32 %5, 75
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br i1 %exitcond, label %1, label %2
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; CHECK: bl __adddf3
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; CHECK: cmplwi
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; CHECK-NOT: li [[REG1:[0-9]+]], 175
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; CHECK-NOT: mtctr [[REG1]]
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}
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define void @foo2() #0 {
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store double 1.100000e+00, double* @y, align 8
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store double 1.100000e+00, double* @x, align 8
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br label %2
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; <label>:1 ; preds = %2
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%.lcssa = phi double [ %4, %2 ]
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store double %.lcssa, double* @y, align 8
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ret void
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; <label>:2 ; preds = %2, %0
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%3 = phi double [ 1.100000e+00, %0 ], [ %4, %2 ]
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%i.01 = phi i32 [ 0, %0 ], [ %5, %2 ]
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%4 = fsub double 1.100000e+00, %3
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%5 = add nuw nsw i32 %i.01, 1
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%exitcond = icmp eq i32 %5, 75
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br i1 %exitcond, label %1, label %2
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; CHECK: bl __subdf3
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; CHECK: cmplwi
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; CHECK-NOT: li [[REG1:[0-9]+]], 175
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; CHECK-NOT: mtctr [[REG1]]
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}
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define void @foo3() #0 {
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store double 1.100000e+00, double* @y, align 8
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store double 1.100000e+00, double* @x, align 8
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br label %2
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; <label>:1 ; preds = %2
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%.lcssa = phi double [ %4, %2 ]
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store double %.lcssa, double* @y, align 8
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ret void
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; <label>:2 ; preds = %2, %0
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%3 = phi double [ 1.100000e+00, %0 ], [ %4, %2 ]
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%i.01 = phi i32 [ 0, %0 ], [ %5, %2 ]
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%4 = fmul double %3, 1.100000e+00
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%5 = add nuw nsw i32 %i.01, 1
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%exitcond = icmp eq i32 %5, 75
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br i1 %exitcond, label %1, label %2
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; CHECK: bl __muldf3
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; CHECK: cmplwi
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; CHECK-NOT: li [[REG1:[0-9]+]], 175
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; CHECK-NOT: mtctr [[REG1]]
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}
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define void @foo4() #0 {
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store double 1.100000e+00, double* @y, align 8
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store double 1.100000e+00, double* @x, align 8
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br label %2
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; <label>:1 ; preds = %2
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%.lcssa = phi double [ %4, %2 ]
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store double %.lcssa, double* @y, align 8
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ret void
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; <label>:2 ; preds = %2, %0
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%3 = phi double [ 1.100000e+00, %0 ], [ %4, %2 ]
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%i.01 = phi i32 [ 0, %0 ], [ %5, %2 ]
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%4 = fdiv double 1.100000e+00, %3
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%5 = add nuw nsw i32 %i.01, 1
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%exitcond = icmp eq i32 %5, 75
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br i1 %exitcond, label %1, label %2
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; CHECK: bl __divdf3
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; CHECK: cmplwi
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; CHECK-NOT: li [[REG1:[0-9]+]], 175
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; CHECK-NOT: mtctr [[REG1]]
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}
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attributes #0 = { "use-soft-float"="true" }
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