; RUN: opt -S -licm < %s | FileCheck %s --check-prefix=CHECK-LICM ; RUN: opt -S -licm < %s | opt -S -loop-sink | FileCheck %s --check-prefix=CHECK-SINK ; RUN: opt -S < %s -passes='require,loop(licm),loop-sink' \ ; RUN: | FileCheck %s --check-prefix=CHECK-SINK ; Original source code: ; int g; ; int foo(int p, int x) { ; for (int i = 0; i != x; i++) ; if (__builtin_expect(i == p, 0)) { ; x += g; x *= g; ; } ; return x; ; } ; ; Load of global value g should not be hoisted to preheader. @g = global i32 0, align 4 define i32 @foo(i32, i32) #0 !prof !2 { %3 = icmp eq i32 %1, 0 br i1 %3, label %._crit_edge, label %.lr.ph.preheader .lr.ph.preheader: br label %.lr.ph ; CHECK-LICM: .lr.ph.preheader: ; CHECK-LICM: load i32, i32* @g ; CHECK-LICM: br label %.lr.ph .lr.ph: %.03 = phi i32 [ %8, %.combine ], [ 0, %.lr.ph.preheader ] %.012 = phi i32 [ %.1, %.combine ], [ %1, %.lr.ph.preheader ] %4 = icmp eq i32 %.03, %0 br i1 %4, label %.then, label %.combine, !prof !1 .then: %5 = load i32, i32* @g, align 4 %6 = add nsw i32 %5, %.012 %7 = mul nsw i32 %6, %5 br label %.combine ; CHECK-SINK: .then: ; CHECK-SINK: load i32, i32* @g ; CHECK-SINK: br label %.combine .combine: %.1 = phi i32 [ %7, %.then ], [ %.012, %.lr.ph ] %8 = add nuw nsw i32 %.03, 1 %9 = icmp eq i32 %8, %.1 br i1 %9, label %._crit_edge.loopexit, label %.lr.ph ._crit_edge.loopexit: %.1.lcssa = phi i32 [ %.1, %.combine ] br label %._crit_edge ._crit_edge: %.01.lcssa = phi i32 [ 0, %2 ], [ %.1.lcssa, %._crit_edge.loopexit ] ret i32 %.01.lcssa } !1 = !{!"branch_weights", i32 1, i32 2000} !2 = !{!"function_entry_count", i64 1}